I think my biggest problem with the story was the fact that a brush salesman who spent his afternoons going door-to-door in this perfectly manicured neighborhood got himself completely wrapped up in the personal lives of his customers. So caught up, it cost him his life. I had a hard time swallowing this plot point and without it, there was no motive, so you had to be onboard with the character and his connection to the families in order to be onboard with the episode. Yup, this is where I went wrong. As usual with this show, though, I enjoyed the jaunt through history and all of the sets, costumes, hair, lingo, etc. was done perfectly (again, as usual). It was a visual feast for the eyes if nothing else.
I also enjoyed the continuation of Lilly's story. Her scene with her father in the car is further proof that if given the right material, Kathryn Morris really shines. They haven't done much with her character this season (other than this daddy story line and a brief romance with guest star Bobby Cannavale). I'd like to see them write some cases that affect her emotionally like they used to during the show's first and second seasons. CC is missing these sorts of scenes and it's hurting my connection to the character and thus, the show. So, Cold Case may have lost its magical luster over the past few seasons, but it's still strong enough to keep me watching. This episode gets a solid "good," so CC moves to 13-0-1 on the season.
Screencaps courtesy RichE.