With the help of Sheriff Truman and the Twin Peaks Police Department, Cooper tracked down the killer, but not before he claimed the life of Madeline Ferguson, Laura Palmer's cousin. With his flamboyant openness and eye for detail, Cooper gained the trust and respect of the police force and the townspeople. Throughout the murder investigation of Laura Palmer, Agent Cooper demonstrated incredible and unusual detective skills, such as a Tibetan rock-throwing test, used to wade through a list of suspects. Probably the most unusual of all was how he deduced the identity of Laura's killer. The following is a break down of the imagery and dialogue from Cooper's dream and how they were pertanent in revealing Laura's killer.
Cooper sits in a chair.
The dwarf is here too. BOB at the foot of Laura's bed. A bloody cloth. BOB crouched at Laura's bed from Sarah's vision. We lived above it.