A witness and an alibi suggest Merritt may be innocent of the murders.
Police look at suspects, and video of a truck may reveal the killer.
In the first of the semi-finals, two teams of brothers go up against each other to build jaw-dropping chain reaction machines to enable Richard to dust his ornaments without getting out of bed
Asked questions including, who killed the Princes in the tower in 1483? What actually caused the Black Death? Why did a witch craze sweep 16th century Britain?
Billy joins Jesse, Pat Garrett and another outlaw called Frank Baker, as well as the rest of the 7 Rivers Gang in their new camp just outside the town of Lincoln. The gang is now working for Lincoln's most powerful boss, Major Murphy.
After finally consummating her relationship with Chris in Chicago, Nikki wants to have bigger conversations about their future, but Chris deflects; Nikki faces her singing insecurities and performs live for the first time.
The top three perform, and a winner is chosen; guest performers include Carrie Underwood, James Arthur, Sara Bareilles, Gabby Barrett, Michael Bublé, Deana Carter, Earth, Wind and Fire, Melissa Etheridge, Flo Rida, Ben Platt and more.
Three elite survivalists join the challenge. Dan and Waz take on dangerous prey to get a big score but it could mean serious injury. Amber battles an aggressive caiman to feed her team. Steven's main source of food turns sour.
A few dozen home chefs battle it out in the Masterchef Kitchen to earn the best chef title, judged by top Australian chefs.
Elizabeth worries about her relationship with Lucas, while Bill helps Gowen through the fallout of the mine explosion. Rosemary and Lee receive some news.
Stanley Tucci explores how Italian immigration transformed the food scene in his adopted hometown of London; London is a culinary mecca where Italian food from every region gets a chance to shine.
The NCIS team continues to search for Callen as they realize they're being tricked by multiple deep fakes, and Kensi and Deeks hear exciting news regarding the adoption.
Ziwe explores the climate crisis with comedian Ilana Glazer and then puts on a charity event to save the penguins. Featuring iconic special guests Jane Krakowski and Ike Ufomadu.
Hospitals facing drug shortages; Chicago Hope funds blanket scholarships for students to attend in-state colleges for free; opera singer Jonas Kaufmann.
The ladies travel to the Big Apple for Kandi's Broadway show, but her giftbag generates unexpected buzz with her single friends. A condo reveals the cracks in Kandi and Todd's relationship. Drew and Ralph attempt to repair their own marital woes with a 30-day challenge.
After failing to get Pop's declared a historical landmark, Tabitha enlists Archie's help saving the diner from Percival. Betty opens up to Agent Drake about her ability to see people's evil auras. Meanwhile, after Reggie and the shareholders declare war on Veronica, she turns to Jughead for help maintaining control of the Babylonium. Finally, Cheryl reconnects with her childhood crush Heather, and Toni and Fangs continue their fight for custody of Baby Anthony.
Jack and Duncan make a local plumbing commercial to increase their wealth and status, but they soon lose sight of trying to impress Annie and Mia with their fame when they get too full of themselves.
As the survivors prepare to escape the area by raft, Alicia turns back to save one more person trapped in the fallout.
In Ystradgynlais in south Wales, Joe Crowley visits a local rugby club where mental health is every bit as important a physical fitness. Anita Rani gets knitting with a group of grandmothers whose woolly wonders have given them a new lease of life. Tom Heap discovers what new rules around gene editing could mean for the future of our food. Nigel Owens, former international rugby referee turned farmer and current president of the National Federation of Young Farmers' Clubs, explains how he has dealt with mental health, and Adam Henson catches up with a young Welsh farmer to find out what can be done to combat loneliness in agriculture. Adrian Chiles is in Dorking in Surrey to explore more weird and wonderful goings-on in our countryside.