Castle and Beckett investigate a murder with connections to the the Mayor’s Office, causing several friendships to be tested.

‘Alcatraz’ premieres tonight with the return of two prisoners from 1963. They both return to kill. Why are they coming back now and who sent them?

When Lily and Marshall decide to move to Long Island, the rest of the gang experiences separation anxiety. The Eriksens, however, face another obstacle: a live-in in-law.

Bridget’s return continues to disrupt the crew on their diplomatic mission to Russia, while Maggie and Ted manage to find trouble back in the States.

We finally filled in some of the gaps in Emma’s backstory as she sympathized with Hansel & Gretel who faced going into the foster system.

The sight of Hank getting knocked down by a fellow artist — actor, director, writer, whatever — is nothing new, but I feel like it wasn’t quite as funny seeing someone who looks like Pete Berg punching him in the face. Next time, how about Woody Allen?

Filled with a few fluff stories, but also armed with two interesting plot developments, this week’s installment may have been a bit slow, but at least it kept things moving forward. That counts for something, right?