S4 E15; Hit List

What an intense episode! A man is murdered in the lobby of police headquarters. Sgt Grey is shot to prevent him from being a Grand Jury witness and he kills his attacker. After all these years on the force this is the 1st time he's killed anyone. It's something he's struggling with as well as the fact that he is getting old.

Thorsen pulled over the dad of the man he supposedly murdered while a camera crew films the encounter. Thorsen has to arrest him when he becomes combative. He feels terrible about it and decides to let him go.

Then they discover that not only the Grand Jury witnesses are in danger but also the prosecutor(Michael Trucco, nice to see him again). Chen and Bradford race to save ADAs DelMonte and Sanford and arrive just in time. Lucy seems to be really interested in Sanford

Nolan is delighted to discover something that Bailey isn't great at - she's a terrible painter!

I'm kind of shocked at how pregnant Harper was. It looked like she was 7 months pregnant.