Butterfly on the Shoulder

Butterfly on the Shoulder (1978) is a thriller, mystery directed by Jacques Deray rated 5.9/10.

On a stopover in Barcelona, Fériaud Roland discovers a corpse in the hotel room next door. He wakes up in a strange clinic without remembering who brought him there. The doctor insists he hallucinated, but it's not long before he obtains evidence that it wasn't a dream.