Stay (2005)

When psychiatrist Sam Foster takes on a new patient named Henry Letham, he is faced with the challenge of unraveling the truth behind Henry's claim of being suicidal. In his quest for answers, Sam delves into Henry's past therapy sessions and seeks out Henry's mother, despite Henry's shocking confession of murdering both his parents. As the line between reality and fiction blurs, Sam's own mental well-being becomes increasingly fragile. A crucial discovery provides Sam with a potential lead on Henry's impending suicide attempt, prompting him to race against time to prevent a tragedy.