Costume

Typical costume of characters within a pshycological thriller.

From looking at other professional pshycological thrillers, it shows that all the main characters in each of the pshycological thrillers i have looked into, have been well dressed, perhaps showing buisnessman, but almost always in some kind of uniform or suit. Here are a few examples:

Momento

This image is from Momento, and this is the main character with pshycological issues. He is wearing a suit. Smartly dressed, clean.

Phone Booth

This image is from Phone booth of the main character and another character, both in suits, the main character is dressed a little more smartly and cleanly then the other (right)

Catch me if you can

This image is from catch me if you can, also the main character in a pilot uniform, (suit) smartly dressed, also a pshycological character, a fraud.