Old picture used in autopsy chosen (6)
I believe the answer is:
psycho
'old picture' is the definition.
(1960 film)
'in autopsy chosen' is the wordplay.
'in' indicates a hidden word.
'PSYCHO' can be found hidden inside 'autopsy chosen'.
'used' is the link.
(Other definitions for psycho that I've seen before include "Hitchcock's 1960 classic chiller" , "Chopsy (anag.)" , "Famous Hitchcock film about man with mental disorder" , "Prefix denoting the mind or soul" , "Well-known Hitchcock film" .)