Val Kilmer has been branded "the worst human being I've ever known" by director Adam Marcus.
Marcus worked with the late actor - who died in April, 2025 at the age of 65 - on 2008 action thriller Conspiracy in which the actor played an Iraq war veteran who attempts to unravel the mystery behind the disappearance of a friend.
However, the writer/director has now insisted working with the Top Gun star was not a pleasant experience.
