Friday’s TV highlights

SERIES

Who Do You Think You Are? In this new episode Helen Hunt goes in search of information about her paternal ancestors and makes some interesting discoveries in San Francisco, including the fact that her great-great-grandfather, an immigrant, helped launch Wells Fargo, and her great-great-grandmother was a women’s rights activist (8 p.m. NBC).

Need to Know: This new episode documents military veterans returned from serving in Iraq and Afghanistan and have trouble finding jobs(8:30 p.m. KOCE).

Supernatural: Sam (Jared Padalecki) winds up in a mental hospital after Lucifer (Mark Pellegrino) drives him to the breaking point. Misha Collins guest stars in this new episode (9 p.m. KTLA).

SoCal Connected: Jennifer London reports on “fracking,” a controversial oil and gas drilling technique now being used in L.A. county that has some nearby residents worried (9 p.m. KCET).

Sweet Home Alabama: Paige takes the remaining gentlemen on her dream dates in the two-hour season finale (9 p.m. CMT).

Merlin: With Morgana (Katie McGrath) at the head of a vast Southron army, a deadly net is closing around Camelot. Bradley James and Colin Morgan also star in the opener of a two-part story (10 p.m. Syfy).

In Plain Sight: In this new episode, Mary (Mary McCormack) juggles her newest case — a hoarder who witnessed a murder — with child care and calls on her colleagues to help out. Tia Carrere, Madchen Amick and Jennifer Elise Cox guest star (10 p.m. USA).

Saving the California Dream: This new episode examines the California housing crisis, pension issues and the economic forecast for the state. (10:30 p.m. Fox).

SPORTS

NCAA basketball: Xavier vs. Baylor (4 p.m. CBS); Ohio vs. North Carolina (4:30 p.m. TBS); Indiana vs. Kentucky (6:30 p.m. CBS); North Carolina State vs. Kansas (7 p.m. TBS).

Pro basketball: The Boston Celtics visit the Philadelphia 76ers (5 p.m. ESPN); the Denver Nuggets visit the Utah Jazz (7:30 p.m. ESPN); the Portland Trail Blazers visit the Lakers (7:30 p.m. FSN).