‘American Masters’

The PBS series profiles Sister Rosetta Tharpe, an influential gospel singer and guitar player during the 1940s-1960s. The special features archival performances and interviews with fellow musicians, producers and friends. 10 p.m. Friday on KCTS (seattletimes.com/tvlistings).

Also on Friday

“Kitchen Nightmares,” 8 p.m. (Fox): A well-liked, retired couple ask Ramsay to help their son, who has taken over their restaurant, Nino’s, in Long Beach, Calif.

“Out There,” 8 p.m. (IFC): After Chad faints in sex-ed class, Chris makes it his mission to get Chad more comfortable with the female form.

“The Princess Bride” (1987), 8 p.m. (BBC America): A storybook stableboy turns pirate and rescues his beloved, who is about to marry a dreadful prince.

“Shark Tank,” 9 p.m. (ABC): Unique eyewear made of sustainable wood; a camouflage clothing line for duck hunters; a premium denim line; high-end bedding for girls.

“Merlin,” 10 p.m. (Syfy): Merlin has to leave Camelot to help a young Druid boy.

The New York Times