For a moment I thought that the case would never be solved, the evidence wasn't there for their two suspects and then that one little piece of evidence brought the team to the real killer. I like cases that make you guess all the time and that make you wonder how in the world they team is going to solve the case.
I also loved the scene where Adam got to play the polygraph expert, Adam was really good at acting in that scene and so cute with the glasses on!
As for the how the case turned out, the moment Lindsay revealed some important evidence about the killer's past it was easy to guess his motive, which in the end only caused him from going straight back to jail. Sad, how a person can just throw their life away like that and not even manage to take their anger out on the right person.
In the end; very good episode and a very good case!