In His Eyes

When Harry, Ron, and Hermione are taken to Malfoy Manor, there is already a man there. He has a particular animosity against Wormtail, and he claims to have been captured for an unbelievable amount of years. Oh yeah, and he also claims to be James Potter. Obviously, he's a Death Eater, but how would a Death Eater fake that hopeless, broken look in his eyes...