diff --git a/scripts/ci_test.sh b/scripts/ci_test.sh
index 2ef5b03576..6696a4e890 100755
--- a/scripts/ci_test.sh
+++ b/scripts/ci_test.sh
@@ -13,8 +13,7 @@ test_slither(){
     expected="$DIR/../tests/expected_json/$(basename "$1" .sol).$2.json"
 
     # run slither detector on input file and save output as json
-    slither "$1" --solc-disable-warnings --detect "$2" --json "$DIR/tmp-test.json" 
-    if [ $? -eq 255 ]
+    if ! slither "$1" --solc-disable-warnings --detect "$2" --json "$DIR/tmp-test.json";
     then
         echo "Slither crashed"
         exit 255
@@ -40,8 +39,7 @@ test_slither(){
     fi
 
     # run slither detector on input file and save output as json
-    slither "$1" --solc-disable-warnings --detect "$2" --legacy-ast --json "$DIR/tmp-test.json" 
-    if [ $? -eq 255 ]
+    if ! slither "$1" --solc-disable-warnings --detect "$2" --legacy-ast --json "$DIR/tmp-test.json";
     then
         echo "Slither crashed"
         exit 255
diff --git a/scripts/ci_test_cli.sh b/scripts/ci_test_cli.sh
index 9bfe63d5b1..56e6ff0a40 100755
--- a/scripts/ci_test_cli.sh
+++ b/scripts/ci_test_cli.sh
@@ -4,17 +4,17 @@
 
 solc-select use 0.7.0
 
-if ! slither "tests/config/test.sol" --solc-ast --ignore-return-value; then
+if ! slither "tests/config/test.sol" --solc-ast; then
     echo "--solc-ast failed"
     exit 1
 fi
 
-if ! slither "tests/config/test.sol" --solc-disable-warnings --ignore-return-value; then
+if ! slither "tests/config/test.sol" --solc-disable-warnings; then
     echo "--solc-disable-warnings failed"
     exit 1
 fi
 
-if ! slither "tests/config/test.sol" --disable-color --ignore-return-value; then
+if ! slither "tests/config/test.sol" --disable-color; then
     echo "--disable-color failed"
     exit 1
 fi
diff --git a/scripts/ci_test_dapp.sh b/scripts/ci_test_dapp.sh
index 354e437325..b5051b1312 100755
--- a/scripts/ci_test_dapp.sh
+++ b/scripts/ci_test_dapp.sh
@@ -15,9 +15,9 @@ nix-env -f "$HOME/.dapp/dapptools" -iA dapp seth solc hevm ethsign
 
 dapp init
 
-if slither . --detect external-function; then
-    exit 0
+if ! slither . --detect external-function; then
+    echo "Dapp test failed"
+    exit 1
 fi
 
-echo "Dapp test failed"
-exit 255
+exit 0
diff --git a/scripts/ci_test_embark.sh b/scripts/ci_test_embark.sh
index ad34ffa4fd..4bcb6f78c3 100755
--- a/scripts/ci_test_embark.sh
+++ b/scripts/ci_test_embark.sh
@@ -15,13 +15,10 @@ npm install -g embark@4.2.0
 embark demo
 cd embark_demo || exit 255
 npm install
-slither . --embark-overwrite-config
 
-if [ $? -eq 4 ]
-then
-    exit 0
+if ! slither . --embark-overwrite-config; then
+    echo "Embark test failed"
+    exit 255
 fi
 
-echo "Embark test failed"
-exit 255
-
+exit 0
diff --git a/scripts/ci_test_etherlime.sh b/scripts/ci_test_etherlime.sh
index 9a2f240807..53d3d33501 100755
--- a/scripts/ci_test_etherlime.sh
+++ b/scripts/ci_test_etherlime.sh
@@ -13,12 +13,10 @@ nvm use 10.17.0
 
 npm i -g etherlime
 etherlime init
-slither .
 
-if [ $? -eq 7 ]
-then
-    exit 0
+if ! slither .; then
+    echo "Etherlime test failed"
+    exit 1
 fi
 
-echo "Etherlime test failed"
-exit 255
+exit 0
\ No newline at end of file
diff --git a/scripts/ci_test_etherscan.sh b/scripts/ci_test_etherscan.sh
index 08a160f509..c8e69958cb 100755
--- a/scripts/ci_test_etherscan.sh
+++ b/scripts/ci_test_etherscan.sh
@@ -5,19 +5,15 @@
 mkdir etherscan
 cd etherscan || exit 255
 
-slither 0x7F37f78cBD74481E593F9C737776F7113d76B315 --etherscan-apikey "$GITHUB_ETHERSCAN"
-
-if [ $? -ne 5 ]
-then
+if ! slither 0x7F37f78cBD74481E593F9C737776F7113d76B315 --etherscan-apikey "$GITHUB_ETHERSCAN"; then
     echo "Etherscan test failed"
-    exit 255
+    exit 1
 fi
 
-slither rinkeby:0xFe05820C5A92D9bc906D4A46F662dbeba794d3b7 --etherscan-apikey "$GITHUB_ETHERSCAN"
-
-if [ $? -ne 70 ]
-then
+if ! slither rinkeby:0xFe05820C5A92D9bc906D4A46F662dbeba794d3b7 --etherscan-apikey "$GITHUB_ETHERSCAN"; then
     echo "Etherscan test failed"
-    exit 255
+    exit 1
 fi
 
+exit 0
+
diff --git a/scripts/ci_test_find_paths.sh b/scripts/ci_test_find_paths.sh
index a916fb5a98..1c3652745e 100755
--- a/scripts/ci_test_find_paths.sh
+++ b/scripts/ci_test_find_paths.sh
@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 
-### Test slither-check-upgradability
+### Test slither-check-upgradeability
 
 DIR_TESTS="tests/possible_paths"
 
diff --git a/scripts/ci_test_truffle.sh b/scripts/ci_test_truffle.sh
index b8473b26d3..da1a350c90 100755
--- a/scripts/ci_test_truffle.sh
+++ b/scripts/ci_test_truffle.sh
@@ -13,12 +13,10 @@ nvm use --lts
 
 npm install -g truffle
 truffle unbox metacoin
-slither .
 
-if [ $? -eq 3 ]
-then
-    exit 0
+if ! slither .; then
+    echo "Truffle test failed"
+    exit 1
 fi
 
-echo "Truffle test failed"
-exit 255
+exit 0
\ No newline at end of file
diff --git a/slither/__main__.py b/slither/__main__.py
index d56ac5072b..b27c8ae750 100644
--- a/slither/__main__.py
+++ b/slither/__main__.py
@@ -10,7 +10,7 @@
 import pstats
 import sys
 import traceback
-from typing import Optional
+from typing import Tuple, Optional, List, Dict
 
 from pkg_resources import iter_entry_points, require
 
@@ -54,7 +54,12 @@
 ###################################################################################
 
 
-def process_single(target, args, detector_classes, printer_classes):
+def process_single(
+    target: str,
+    args: argparse.Namespace,
+    detector_classes: List[AbstractDetector],
+    printer_classes: List[AbstractPrinter],
+) -> Tuple[Slither, List[Dict], List[Dict], int]:
     """
     The core high-level code for running Slither static analysis.
 
@@ -72,7 +77,12 @@ def process_single(target, args, detector_classes, printer_classes):
     return _process(slither, detector_classes, printer_classes)
 
 
-def process_all(target, args, detector_classes, printer_classes):
+def process_all(
+    target: str,
+    args: argparse.Namespace,
+    detector_classes: List[AbstractDetector],
+    printer_classes: List[AbstractPrinter],
+) -> Tuple[List[Slither], List[Dict], List[Dict], int]:
     compilations = compile_all(target, **vars(args))
     slither_instances = []
     results_detectors = []
@@ -97,7 +107,11 @@ def process_all(target, args, detector_classes, printer_classes):
     )
 
 
-def _process(slither, detector_classes, printer_classes):
+def _process(
+    slither: Slither,
+    detector_classes: List[AbstractDetector],
+    printer_classes: List[AbstractPrinter],
+) -> Tuple[Slither, List[Dict], List[Dict], int]:
     for detector_cls in detector_classes:
         slither.register_detector(detector_cls)
 
@@ -123,7 +137,12 @@ def _process(slither, detector_classes, printer_classes):
     return slither, results_detectors, results_printers, analyzed_contracts_count
 
 
-def process_from_asts(filenames, args, detector_classes, printer_classes):
+def process_from_asts(
+    filenames: List[str],
+    args: argparse.Namespace,
+    detector_classes: List[AbstractDetector],
+    printer_classes: List[AbstractPrinter],
+):
     all_contracts = []
 
     for filename in filenames:
@@ -137,29 +156,13 @@ def process_from_asts(filenames, args, detector_classes, printer_classes):
 # endregion
 ###################################################################################
 ###################################################################################
-# region Exit
-###################################################################################
-###################################################################################
-
-
-def my_exit(results):
-    if not results:
-        sys.exit(0)
-    sys.exit(len(results))
 
-
-# endregion
-###################################################################################
-###################################################################################
 # region Detectors and printers
 ###################################################################################
 ###################################################################################
 
 
 def get_detectors_and_printers():
-    """
-    NOTE: This contains just a few detectors and printers that we made public.
-    """
 
     detectors = [getattr(all_detectors, name) for name in dir(all_detectors)]
     detectors = [d for d in detectors if inspect.isclass(d) and issubclass(d, AbstractDetector)]
@@ -190,7 +193,9 @@ def get_detectors_and_printers():
 
 
 # pylint: disable=too-many-branches
-def choose_detectors(args, all_detector_classes):
+def choose_detectors(
+    args: argparse.Namespace, all_detector_classes: List[AbstractDetector]
+) -> List[AbstractDetector]:
     # If detectors are specified, run only these ones
 
     detectors_to_run = []
@@ -212,22 +217,22 @@ def choose_detectors(args, all_detector_classes):
         detectors_to_run = sorted(detectors_to_run, key=lambda x: x.IMPACT)
         return detectors_to_run
 
-    if args.exclude_optimization:
+    if args.exclude_optimization and not args.fail_pedantic:
         detectors_to_run = [
             d for d in detectors_to_run if d.IMPACT != DetectorClassification.OPTIMIZATION
         ]
 
-    if args.exclude_informational:
+    if args.exclude_informational and not args.fail_pedantic:
         detectors_to_run = [
             d for d in detectors_to_run if d.IMPACT != DetectorClassification.INFORMATIONAL
         ]
-    if args.exclude_low:
+    if args.exclude_low and not args.fail_low:
         detectors_to_run = [d for d in detectors_to_run if d.IMPACT != DetectorClassification.LOW]
-    if args.exclude_medium:
+    if args.exclude_medium and not args.fail_medium:
         detectors_to_run = [
             d for d in detectors_to_run if d.IMPACT != DetectorClassification.MEDIUM
         ]
-    if args.exclude_high:
+    if args.exclude_high and not args.fail_high:
         detectors_to_run = [d for d in detectors_to_run if d.IMPACT != DetectorClassification.HIGH]
     if args.detectors_to_exclude:
         detectors_to_run = [
@@ -239,7 +244,9 @@ def choose_detectors(args, all_detector_classes):
     return detectors_to_run
 
 
-def choose_printers(args, all_printer_classes):
+def choose_printers(
+    args: argparse.Namespace, all_printer_classes: List[AbstractPrinter]
+) -> List[AbstractPrinter]:
     printers_to_run = []
 
     # disable default printer
@@ -388,6 +395,34 @@ def parse_args(detector_classes, printer_classes):  # pylint: disable=too-many-s
         default=defaults_flag_in_config["exclude_high"],
     )
 
+    group_detector.add_argument(
+        "--fail-pedantic",
+        help="Fail if any finding is detected",
+        action="store_true",
+        default=defaults_flag_in_config["fail_pedantic"],
+    )
+
+    group_detector.add_argument(
+        "--fail-low",
+        help="Fail if low or greater impact finding is detected",
+        action="store_true",
+        default=defaults_flag_in_config["fail_low"],
+    )
+
+    group_detector.add_argument(
+        "--fail-medium",
+        help="Fail if medium or greater impact finding is detected",
+        action="store_true",
+        default=defaults_flag_in_config["fail_medium"],
+    )
+
+    group_detector.add_argument(
+        "--fail-high",
+        help="Fail if high impact finding is detected",
+        action="store_true",
+        default=defaults_flag_in_config["fail_high"],
+    )
+
     group_detector.add_argument(
         "--show-ignored-findings",
         help="Show all the findings",
@@ -538,13 +573,6 @@ def parse_args(detector_classes, printer_classes):  # pylint: disable=too-many-s
         default=defaults_flag_in_config["skip_assembly"],
     )
 
-    parser.add_argument(
-        "--ignore-return-value",
-        help=argparse.SUPPRESS,
-        action="store_true",
-        default=defaults_flag_in_config["ignore_return_value"],
-    )
-
     parser.add_argument(
         "--perf",
         help=argparse.SUPPRESS,
@@ -652,7 +680,9 @@ def main():
 
 
 # pylint: disable=too-many-statements,too-many-branches,too-many-locals
-def main_impl(all_detector_classes, all_printer_classes):
+def main_impl(
+    all_detector_classes: List[AbstractDetector], all_printer_classes: List[AbstractPrinter]
+):
     """
     :param all_detector_classes: A list of all detectors that can be included/excluded.
     :param all_printer_classes: A list of all printers that can be included.
@@ -808,8 +838,6 @@ def main_impl(all_detector_classes, all_printer_classes):
                 len(detector_classes),
                 len(results_detectors),
             )
-        if args.ignore_return_value:
-            return
 
     except SlitherException as slither_exception:
         output_error = str(slither_exception)
@@ -848,11 +876,26 @@ def main_impl(all_detector_classes, all_printer_classes):
         stats = pstats.Stats(cp).sort_stats("cumtime")
         stats.print_stats()
 
-    # Exit with the appropriate status code
-    if output_error:
+    if args.fail_high:
+        fail_on_detection = any(result["impact"] == "High" for result in results_detectors)
+    elif args.fail_medium:
+        fail_on_detection = any(
+            result["impact"] in ["Medium", "High"] for result in results_detectors
+        )
+    elif args.fail_low:
+        fail_on_detection = any(
+            result["impact"] in ["Low", "Medium", "High"] for result in results_detectors
+        )
+    elif args.fail_pedantic:
+        fail_on_detection = bool(results_detectors)
+    else:
+        fail_on_detection = False
+
+    # Exit with them appropriate status code
+    if output_error or fail_on_detection:
         sys.exit(-1)
     else:
-        my_exit(results_detectors)
+        sys.exit(0)
 
 
 if __name__ == "__main__":
diff --git a/slither/detectors/abstract_detector.py b/slither/detectors/abstract_detector.py
index f2ba734db9..528981c924 100644
--- a/slither/detectors/abstract_detector.py
+++ b/slither/detectors/abstract_detector.py
@@ -147,7 +147,7 @@ def _detect(self) -> List[Output]:
     # pylint: disable=too-many-branches
     def detect(self) -> List[Dict]:
         results: List[Dict] = []
-        # only keep valid result, and remove dupplicate
+        # only keep valid result, and remove duplicate
         # Keep only dictionaries
         for r in [output.data for output in self._detect()]:
             if self.compilation_unit.core.valid_result(r) and r not in results:
diff --git a/slither/utils/command_line.py b/slither/utils/command_line.py
index 6d5ad1e611..d0d77c45f2 100644
--- a/slither/utils/command_line.py
+++ b/slither/utils/command_line.py
@@ -34,6 +34,10 @@
     "exclude_low": False,
     "exclude_medium": False,
     "exclude_high": False,
+    "fail_pedantic": False,
+    "fail_low": False,
+    "fail_medium": False,
+    "fail_high": False,
     "json": None,
     "sarif": None,
     "json-types": ",".join(DEFAULT_JSON_OUTPUT_TYPES),
@@ -43,7 +47,6 @@
     # debug command
     "skip_assembly": False,
     "legacy_ast": False,
-    "ignore_return_value": False,
     "zip": None,
     "zip_type": "lzma",
     "show_ignored_findings": False,
diff --git a/slither/utils/output.py b/slither/utils/output.py
index 41b0275493..6296e35d38 100644
--- a/slither/utils/output.py
+++ b/slither/utils/output.py
@@ -22,7 +22,6 @@
 
 logger = logging.getLogger("Slither")
 
-
 ###################################################################################
 ###################################################################################
 # region Output
@@ -359,7 +358,7 @@ def __init__(
         else:
             info = info_
 
-        self._data: Dict[str, Any] = OrderedDict()
+        self._data = OrderedDict()
         self._data["elements"] = []
         self._data["description"] = "".join(_convert_to_description(d) for d in info)
         self._data["markdown"] = "".join(_convert_to_markdown(d, markdown_root) for d in info)