In all honesty, this was a very tough episode for me to watch. It is stunning to think that these events could really be happening in a real prison out there somewhere. Martin's scene with Beast by tempting him with a family visit tugged at heartstrings. It really brought to light the fact that some inmates don't get to see their families and they are all missing out on some important events in their families lives. The sister of the missing was very well played - I'm not sure of the actress' name (but I'm pretty sure I saw her on Related as Marjee's boss) but she played her role so well.
The plot was involving, with many twists and all were smoothly executed by the cast. This story brought in so many controversial points -- race division, prison/inmate relations and of course, penitence. All is felt through this episode -- Without A Trace does it again.