* CALL THE MIDWIFE. 8 p.m.
Season 4 of the popular series continues without Jenny Lee (Jessica Raine), but with a new face (Charlotte Ritchie) at Nonnatus House. Missing Raine? "Wolf Hall," which premieres on "Masterpiece" April 5, will have you seeing her in a whole new light.
* GOING CLEAR: SCIENTOLOGY AND THE PRISON OF BELIEF.
8 p.m. Sunday, HBO.
This eye-opening documentary from Oscar winner Alex Gibney traces the history of the Church of Scientology, including interviews with several disenchanted former members and more about Tom Cruise than you may want to know.
* KILLING JESUS. 8 p.m. Sunday, National Geographic Channel.
Haaz Sleiman stars in an adaptation of the Bill O'Reilly and Martin Dugard bestseller that's at its liveliest showing Jesus of Nazareth as a disruptive force, challenging the establishment of his time. I couldn't help wondering how O'Reilly's Fox News Channel might have covered the rabble-rousing carpenter who championed the poor.
* MASTERPIECE: MR. SELFRIDGE. 9 p.m. Sunday, WHYY12.
Jeremy Piven returns for a third season as Harry Selfridge, the brash American who helped revolutionize the way Britons shopped, in an episode that includes a couple of weddings, a funeral and plenty of intrigue.
* BLACK SAILS. 9 p.m. Saturday, Starz.