NCIS investigates the apparent suicide of a retired Navy officer who was in Palmer and Knight's grief group. Also, Torres gets a call from NCIS Special Agent Jane Tennant (Vanessa Lachey) to come to Hawai'i when she gets a lead on a witness from a case they worked on together.
Under Abuela's watch for the weekend, the Diaz kids are committed to making her visit disaster-free, that is, until Harley learns that Ethan spilled her deepest secret.