Sean Murray Shares the ‘NCIS’ Screen With His IRL Child

Although Teagan creates an algorithm to unlock the doors of the houses on the base so she and her friends can merely throw parties, someone else uses her method to invade another residence and kill a lieutenant. OK, we don’t want to spoil too much, but we will say this: Sean and Cay Ryan’s father-daughter relationship translates so beautifully on-screen.

New episodes of NCIS air on Mondays at 9 p.m. EST on CBS.