Diggin' Up Dirt

S2 E12: When Riggs visits his father-in-law (recurring guest star TONY PLANA) in prison, a walk down memory lane reveals an old secret about his deceased wife (recurring guest star FLORIANA LIMA). Meanwhile, Murtaugh tries to impress Captain Avery, and, united by the death of a mutual friend, Trish and Leo Getz (THOMAS LENNON) try to solve a murder on their own.