A departure from the usual charming detective comedy and though not brilliant, still touching.
Got to admire Sam's inventiveness in getting Melanie's body out of his apartment, a fake delivery of a fridge, get it upstairs, move the body, take it out again with apologies for the error. Keeping the body refrigerated is very cold, no pun intended. Displays a depth of thought and planning that is disturbing. Very clever, no body means she stays a missing person and no evidence turns up to ruin things. It could have gone on indefinitely if not for Sam's murder. Who can blame the best friend for stopping the payments, five years of living with that horror on your conscience, this was a chance to make things right and accept the consequences of a choice to help a murderer, even if he is your best friend. Of course, there was the downside of waiting until the body is finally found, waiting for the shoe to drop.
Beckett is faced with the unenviable choice – do nothing and Sam's murderer goes free or do her duty and expose the truth. Horrible as the choice is, there is no choice – Beckett is a good cop and could never have done that. She couldn't have lived with it. Being a police officer is more than a job, it's a calling. If you don't believe in justice, how could you do the job? Even if the courts mess up and he walks, she's done her job and done it well. It's a matter of faith.
Castle finally finds out the mystery tragedy which made Beckett a cop and her little ritual with the watch and the ring is quite touching, the idea surprisingly deep. Very subtly acted. I like that Castle has come to care for her enough to take an interest, even though digging into her mother's murder will bring him into conflict with her when she finds out.
A very different episode than the previous ones and while it was less enjoyable, it was well done.