diff --git a/doubly-dangerous/grader.py b/doubly-dangerous/grader.py
new file mode 100644
index 0000000..981da52
--- /dev/null
+++ b/doubly-dangerous/grader.py
@@ -0,0 +1,4 @@
+def grade(random, key):
+    if key.find("bofs_and_floats_are_d0uble_tr0uble!") != -1:
+        return True, "Correct!"
+    return False, "Nope :("