Delirium is a 2018 American psychological horror film directed by Dennis Iliadis and written by Adam Alleca. It stars Topher Grace, Patricia Clarkson, Callan Mulvey and Genesis Rodriguez. The film was produced by Jason Blum through Blumhouse Productions and Leonardo DiCaprio through Appian Way Productions. The film was released by Universal Pictures on May 22, 2018, via video on demand and DVD on June 5, 2018.