Adam Marcus slams Val Kilmer's behavior while filming the 2008 direct-to-DVD movie "Conspiracy," calling the late actor the "worst human being I've ever known."Show Caption

One director is looking not-so-fondly back on his time working with Val Kilmer.Adam Marcus, a director and writer best known for his work on horror films, apparently suggested in a now-deleted Threads post that the late actor behaved badly on set of his 2008 thriller "Conspiracy.""#MicroIntellectMonday to that time when I directed that guy. The guy who played Iceman and Doc Holiday [sic]," Marcus wrote on Sunday, May 31, alongside a photo of the director and actor together, according to Entertainment Weekly. "You know the one. Here's me and the Putz working it out on the set of Conspiracy."Marcus also preemptively addressed any backlash about speaking "ill of the dead," adding that if Kilmer "did one-tenth of what he did on my set today, he would have been cancelled in a blink."The "Jason Goes to Hell" director continued, per the outlet, "Worst human being I've ever known… and that is really saying something."The posts no longer appear to be on his Threads page. USA TODAY has reached out to representatives for Marcus and Kilmer for comment.Kilmer starred as disabled special ops veteran William "Spooky" MacPherson in the critically panned direct-to-DVD film, opposite Jennifer Esposito and Gary Cole. The film has a 19% Popcornmeter rating on Rotten Tomatoes, while Richard Roeper, on Ebert & Roeper, called it "beyond dreadful" and "jaw-droppingly bad."Six years after the film's release, Kilmer was diagnosed with throat cancer. He later recovered. The actor had battled the disease publicly for much of the past decade, permanently losing his voice to a tracheotomy, but continuing to act and write.Kilmer died in April 2025 from pneumonia at age 65.Val Kilmer admitted he'd behaved 'poorly' and 'bizarrely'In an intimate 2021 documentary, "Val," Kilmer looked back at his personal ups and downs as the film culled from hundreds of hours of personal home footage. The documentary was narrated by the actor's son, Jack.Toward the end of "Val," Kilmer took stock of his legacy, saying ultimately that he feels "blessed.""I have behaved poorly," Kilmer said in the documentary. "I have behaved bravely. I have behaved bizarrely to some. I deny none of this and have no regrets because I have lost and found parts of myself that I never knew existed."Contributing: Bryan Alexander and Patrick Ryan, USA TODAY