Hedy Lamarr fled Austria and her arms dealing husband to become a big Hollywood star. She tired of being the most beautiful woman on the screen and turned to invention, working with Howard Hughes to make faster planes, and later developing a radio signals from jamming torpedoes, a type of technology that led to Bluetooth. Also, she invented Fizzes.
Because she never spoke publicly about such work, nobody thought she actually accomplished such things. It’s all told in Alexandra Dean’s “Bombshell: The Hedy Lamarr Story” makes its TV debut on “American Masters” (PBS, 9 p.m., check local listings).
The controversial series “13 Reasons Why” (Netflix, streaming), built around the suicide of a high school student, begins a second season. Based on a book, the original source material was exhausted by the first season and its 13 reasons delivered individually to different people explaining the suicide. This year’s action centers on the student’s mother, suing the school for preventing the bullying that led to the death.
There’s no avoiding the royal stuff now. (In fact, you may want to stay up to watch the start of things, which begins at 4 a.m. Saturday). If not, there’s always “Prince Harry: Wild No More” (TLC, 8 p.m.), “Harry and Meghan: A Love Story” (The CW, 8 p.m.), “The Royal Wedding” (BBC America, 8 and 8:30 p.m.), “Meghan Markle: A Royal Love Story” (TLC, 9 p.m.), “Harry and Meghan: A Very Modern Romance” (BBC America, 9 p.m.), “A Royal Match: Meghan and Harry” (CNN, 9 p.m.), “Secrets of the Royal Wedding” (TLC, 10 p.m.), “Prince Harry’s Story: Four Royal Weddings” (National Geographic, 10 p.m.), “Royal Wedding Watch” (PBS, 10:30 p.m., check local listings) and a special report on “20/20” (ABC, 10 p.m.). And he’ll be performing at the wedding so there’s a replay of “Elton John: I’m Still Standing – A Grammy Salute” (Pop, 8 p.m.).
“Once Upon a Time” (ABC, 8 p.m.) comes to an end after seven seasons.
A winner is declared at the end of a two hour finale of “MasterChef Junior” (Fox, 8 p.m.).
The limited series “Rellik” (Cinemax, 10 p.m.) comes to an end with all revealed about the killer.
“Blindspot” (NBC, 8 p.m.), “Hawaii Five-0” (CBS, 9 p.m.) and “Marvel’s Agents of S.H.I.E.L.D.” (ABC, 9 p.m.) all have their finales as well. Each will return next season.
Clint Watts, Dambisa Mayo, Evan Mcmullen, Dan Savage and Bari Weiss are guests on “Real Time with Bill Maher” (HBO, 10 p.m.).
The South African film “Catching Feelings” (Netflix, streaming) debuts. It stars Kagiso Ledigs and Pearl Thus as a Johannesburg academic and his wife, whose lives are upended when a hedonistic older writer moves in with them.
Another new online film, “Cargo” (Netflix, streaming), stars Martin Freeman as a man who is stranded in the Australian outback after the zombie apocalypse has struck, trying to protect his infant daughter as he goes.
Idina Menzel gets a disguise to hunt for Broadway talent on “Undercover Boss: Celebrity Edition” (CBS, 8 p.m.).
“Wyatt Cenac’’s Problem Areas” (HBO, 11:30 p.m.) frets about the robot takeover.
Stella and Wes discuss their future on “Life Sentence” (The CW, 9 p.m.). Don’t tell them their show’s been cancelled.
The dreaded Heidi and Spencer Pratt pop up on “David Tutera’s Celebrations” (WeTV, 10:13 p.m.).
Even lesser known irritants have been on “Marriage Boot Camp: Reality Stars” (WeTV, 9 p.m.), which has a behind the scenes episode tonight.
Alastair Sim stars in three films on Turner Classic Movies: “School for Scoundrels” (8 p.m.), “The Belles of St. Trinian’s” (10 p.m.) and “Laughter in Paradise” (midnight). Then comes two from 1987 that feature musicians in the cast: “Dudes” (2 a.m.) with Flea, and “Border Radio” (4 a.m.) with John Doe.
Game four of the Stanley Cup Western conference finals has Winnipeg at Vegas (NBC Sports, 8 p.m.).
The NBA draft combine (ESPN2, 3 p.m.) continues.
Baseball includes Arizona at Mets (MLB, 7 p.m.).
The NCAA softball regionals includes Notre Dame at Michigan (ESPN2, noon), Northwestern at California (ESPNU, noon), Wichita State vs. Oklahoma State (ESPNU, 2:30 p.m.), South Florida vs. Ohio State (ESPNU, 5 p.m.), Mississippi vs. Long Beach State (ESPN, 7 p.m.), Boston University vs. Oklahoma (ESPN2, 7 p.m.), Texas vs. Minnesota (ESPN, 9 p.m.), North Dakota State vs. Mississippi State (ESPN2, 9 p.m.) Sacramento State vs. UCLA (ESPN2, 11 p.m.) and Boise State vs. Washington (ESPNU, 11:30 p.m.).
College baseball includes Florida at Mississippi State (ESPNU, 7 p.m.).
Daytime Talk
Kelly Ripa and Ryan Seacrest: Satires Ronan, Rachel Bloom. The View: Erika Jane, Alyssa Milano. The Talk: Mary Steenburgen, Morena Baccarin, Carrie Ann Inaba. Harry Connick: Akbar Gbaja-Biamila, Matt Iseman, Chef Lawrence Page. Ellen DeGeneres: Jason Bateman, the Lab. Wendy Williams: Michael Salzhauer, Jenelle Salazar Butler. The Real: Ziggy Marley.
Late Talk
Stephen Colbert: Benedict Cumberbatch, Mary Gallagher. Jimmy Kimmel: Ryan Seacrest, Gillian Jacobs, Julia Michaels. Jimmy Fallon: Sterling K. Brown, Willie Geist, Chef Danny Bowien. Seth Meyers: Tracee Ellis Ross, Cameron Monaghan, Joe Pera, Aaron Spears (rerun). James Corden: Evan Rachel Wood, Don Johnson, Pentatonix (rerun). Carson Daly: Jesse Spencer, Makeness, Christine Evangelista (rerun).