TV column for Friday, May 18

“American Masters: Bombshell,” 9-10:30 p.m., PBS.

What people remember
about Hedy Lamarr is basic: “She was the best-looking movie star
ever,” Mel Brooks says here. Growing up in a prosperous Austrian
family, she posed for nude photos at 16, had nude scenes in a movie
at 18, then became a Hollywood star.

What people didn't
know was her sharp, inventive mind. She kept a lab in her movie
trailer, worked nights at home, came up with small inventions and
patented a huge one. The Navy ignored her torpedo-guidance ideas
during World War II, but began to use them in the '60s. It's a
fascinating story.

“Hawaii Five-0” season-finale, 9 p.m., CBS.

The eighth season
ends for this show, a week after “Blue Blood” wrapped its season.

A Russian
nuclear-attack submarine suddenly appears off the coast of Waikiki;
soon, the team spots a Russian spy ring that's been operating almost
in the open. Meanwhile, Tani makes an unnerving discovery at Adam's
house and feels conflicted.

ALTERNATIVE: “Once Upon a Time” series finale, 8 p.m., ABC.

For seven seasons,
this has delivered epic-size adventure. Flashing between various
realities, it's had a collision of fairytale characters, new and old.
The ideas were big; the ratings were modest.

Now it has brought
back some of the departed characters -- Emma Swan, Belle, the young
version of Henry ... and, especially, Snow White and Prince Charming.
They lead the fight against the Wish Realm's version of

ALTERNATIVE II: Royal wedding talk, everywhere.

BBC America, which
is quite big on this, uses the entire day for royalty specials. That
peaks with looks at the weddings of William and Kate (7:30 p.m.),
Charles and Diana (8:30) and then a profile of Prince Harry and
Meghan Markle at 9. Those promptly repeat at 10:05, 11:05 and 11:35.

And yes, there's
more. There's a special at 8 p.m. on CW and two on TLC – 8 p.m. on
Harry, 9:02 on Markle. National Geographic reruns the excellent
“Diana: In Her Own Words” at 8 p.m.; that repeats at 11,
sandwiching a Harry special at 10. And PBS wraps its five-day “Royal
Wedding Watch” at 10:30.

Other choices

Junior” finale, 8-10 p.m., Fox. This started with 40 talented
cooks, ages 8-13. Now we're down to the final three, going for a
$100,000 prize. Preparing three-course dinners are Avery Meadows, 8,
of Kingwood, Texas; Beni Cwiakala, 9, of Chicago; and Quani Fields,
11, of Lawrenceville, Ga.

“Undercover Boss:
Celebrity Edition,” 8 p.m., CBS. Idina Menzel, the Tony-winning
“Wicked” star, dons disguises. She works with a wedding singer
and considers doing singing telegrams while wearing a chicken suit.
She's even supposed to sing her hit song (“Let It Go”) to

“Blindspot,” 8
p.m., NBC. Jane and Weller try to finally catch Roman.

“Agents of SHIELD”
season-finale, 9 p.m., ABC. Coulson's life is in jeopardy. And there
are bigger issues – including the possible destruction of the

“Life Sentence,”
9 p.m., CW. Discussing their future, Stella and Wes get a surprise.
Also, her brother – usually a ladies' man -- is thrown off by a
young woman he meets at his community service job.

“Blue Bloods,”
10 p.m., CBS. A detective was gunned down before he could testify
against a career criminal; Danny investigates. Also in this rerun,
Frank investigates an attack on Garrett.