Harvey (1950)

In a small town, an amiable man named Elwood P. Dowd insists on the company of Harvey, an invisible, towering rabbit he claims is a mischievous spirit. Elwood's obsession with Harvey alienates his family and disrupts their lives, leading his desperate sister to attempt a psychiatric commitment. As the battle between sanity and whimsy escalates, Elwood's charm and Harvey's enigmatic influence test the boundaries of belief and reality.