The Mushroom (, , also known as The Murderer Strikes at Dawn, The Killer Strikes at Dawn and LâÂÂassassin frappe àlâÂÂaube) is a 1970 French-Italian crime film written and directed by Marc Simenon.
A physician, growing distant from his workaholic wife, befriends an artist. After a night spent drinking and taking hallucinogenic mushroom with the artist, the physician discovers that his wife had died, and begins to question what took place.