While Malcolm dates a girl whose father hates him, Dewey discovers he's an `evil twin' and Francis mediates a dispute between Otto and his cowboy neighbours.
Lois is away, Hal and Malcolm have a row that ends in Malcolm being banished from the house.
A brutal double murder has haunted Agent Rossi for years and now he is determined to track down the killer.
The team investigates the abduction of a married couple whose identity in unclear. Meanwhile, Jane continues his search for Lorelei.
When a government agent takes an interest in the gang, the club decide to stash their guns in Nevada, running into rivals `the Mayans' along the way.