Montgomery Clift's face in "Raintree County"

Can you tell the scenes he made before and after the horrific car accident? I think the hair is a giveaway, as it looks like a partial toupee'. He also seems thinner after the plastic surgery.

It is a toupee, OP. Clift wore a piece before and after the accident.

You can see his hairpiece popping up in the back in The Defector -