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 to come to Hawai'i when she gets a lead on a witness from a case they worked on together.

NCIS investigates a ring of clever teenage partygoers when a string of break-ins takes place at Marine Base Quantico. While working the case, Special Agent McGee forms a bond with one of the teens, Teagan Fields.