In terms of the case, this was a very interesting episode, although definitely not the best. I found it quite entertaining, and the scenes from Alcatraz were particularly interesting. Lucy's music therapy treatment was quite interesting.
But really, this episode was great because of the recurring storyline with Lucy. I thought it was extremely interesting to follow. They needed to get Porter alive to save her.
Don't want to spoil what happens, but I absolutely love the way this episode eneded, and it makes me impatient for the next episode! Will be entertaining for sure! Keep it up, Alcatraz!!!