Mrs. Dietl is the mother of Derek Dietl and a minor character in the Film. According to her, the Dietl family has a genetic disorder that affects the thumb, which skips a generation like Derek. This disability was demonstrated when Susan transformed and she couldn't open the door.

Ad blocker interference detected!

Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers

Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.