The Venture Bros. (2004)

S4E3 Perchance to Dean

Rusty starts to mentor Dean in the ways of being a super scientist, unaware that a malformed clone of Dean, thought to be aborted, is lurking around the compound. The clone's attempt on Dean's life causes confusion when Hank mistakenly believes he has killed his brother. Meanwhile, local police are gearing up to raid the compound after a UPS delivery driver raises suspicions about potential illegal activities taking place.