An investigation involving the murder of a local singer uncovers details that reopen a strikingly similar decades-old cold case; the team rallies around Soto after she is passed over for the captain's chair.

It's almost Halloween, and the team investigates a spooky case where a wealthy lawyer is found dead in his haunted Victorian mansion, while Captain Wagner surprises everyone with his skills. At home, Eliott plays mediator between Morgan and Ava.