Timmy Failure: The Cat Stole My Pants is the sixth book in the series.
Timmy is in Key West, Florida, ostensibly for the honeymoon of his mother and Doorman Dave — if they even got married, which Timmy doubts. Unfortunately for Timmy, crime doesn’t take a vacation. And because Total has fled to Cuba seeking political asylum, Timmy must rely on a new partner for help: Doorman Dave’s nephew Emilio. Meanwhile, a surprise newcomer shows up in Timmy’s life and, as if things couldn’t get more hectic, Timmy’s pants have been stolen by a six-toed cat.
- This is the first appearance of Timmy's biological father.