Seth pulls off a magnanimous gesture for Summer, then blows it. Lindsay and Ryan become physics lab partners and share some romantic chemistry.
A woman asks the NCIS team to investigate the death of her husband, a Marine who specialized in K-9 bomb detection; Vance interviews nannies.
The shooting of a cop who worked with Chris raises questions about their old anti-gang unit.
The NCIS team investigates the murder of a journalist who was writing an exposé on a mishandled classified military operation; as their wedding day quickly approaches, Kensi and Deeks work on the last remaining items on their to-do list.
A customer asks the café to bake his wedding cake; Kat tries to figure out where her relationship with Max stands.
