Trivia

In the movie, Val Kilmer (as John Holmes) wears a chain around his neck that holds a ring. The ring was the actual wedding band that John Holmes gave his wife, Sharon, when they got married in 1965. Sharon loaned it to Val to give him good luck on the movie. When the movie was over, Sharon then gave the ring to Dawn Schiller.

In the climactic murder scene from the John Holmes perspective, there are several single-frame shots of the actual corpses from the 1981 LAPD crime scene photographs.

When the film played the Toronto Film Festival, one of the promotional items handed out was a ruler that was 13 1/2 inches long.

Both Josh Lucas and Val Kilmer spent the night in the actual Wonderland house on the anniversary of the murders.

In reality, John Holmes did not visit Eddie Nash after the robbery at his house. Rather, John was spotted on the street the day after the robbery by some of Nash's associates in Hollywood. They noticed that John was wearing some of the jewelry that was stolen in the robbery and told Nash about it. John was then accosted by two gunmen on the street just after he visited a local answering service in Santa Monica to pick up his mail and phone messages who then took him to Nash for questioning.

Paris Hilton: As Barbie, one of the sunbathing women on the yacht when Val Kilmer's John Holmes first meets Eric Bogosian's Eddie Nash.