Wouldn't it be something if Mark really was the killer, and also a sociopath who'd been slowly gaining this good-guy reputation over the years?

I hope mark is proven innocent, cool story btw

Malcolm Trainor was horrid in the show. He'd better not even try to toy with Carol. I hope she keeps her guard up if anything suspicious happens.
The cursing is a little strong for my taste. Of course, I'm not in their shoes, but a little less cursing would be nice.
What makes Retribution so hard to watch is the way throughout the episode that Steve wasn't on the ball able to help Mark, and then the other times he was told to step aside.

That has got to be the most devastating episode ever, with the audience almost losing both Steve and Mark! I can't watch that episode without feeling so angry!