The Psychic Detective is not a mentalist

I was just looking at the back pf a book that descibed a character as a psychic detective. You could do a character like this in game withot using mentalism rules. Simply allow the character to use a INT check to "read" an NPC, clue or situation. Put a limit of 3 checks per game day or 5 per game session should keep the ability from being overused.