When a dangerous run-in with a coven of vengeful witches forces Rebekah to align with Marcel, they quickly discover that the body Rebekah is currently inhabiting has a checkered past. Upon learning that Rebekah is in danger, Elijah seeks out a respected elder witch, Josephine, in the hopes she might offer her assistance. Meanwhile, tensions build when Klaus clashes with Hayley and Jackson over how best to protect baby Hope from Finn. Elsewhere, Freya, convinces Finn to bring her to Mikael, the father she hasn't seen in over a thousand years. Lastly, a confrontation with Freya leaves Elijah and Klaus questioning whether they can trust their long-lost sister.

Sophie's wedding shower is interrupted by a hostage situation and Max and Caroline's cupcake business gets unwanted attention when a tenant is arrested while wearing their company's T-shirt.

The blind auditions conclude. Later, the battle round begins, featuring advisers Ellie Goulding, Lionel Richie, Meghan Trainor and Nick Jonas.

Chris brings the women to meet his family in hope it will make the answer more clear.

Stef confides in Lena and Callie about a plan that will make it possible for the Adams Fosters to adopt Callie, but she's not being fully honest about some of the steps she's taken to put the plan in motion. In turn, Lena hasn't been completely truthful with Stef about her conflicting emotions over expanding their family. Meanwhile, Brandon has an opportunity to pursue his dream of being a classical musician, but it could come at a price. Jude breaks the rules in order to be with Connor and faces dire consequences.

Molly's excited her book is finally out and available for purchase, but worries obsessively that no one will buy it.

Hayley gets a job and starts to fall for a co-worker.

Meanwhile, Stan chauffeur?'s Steve and Francine to a Mother-Son dance.

April and Beth confide their doubts about each other's boyfriends and decide to arrange a double date to get to know the guys better. April tries to hide her disappointment when Leo pulls away from the cancer support group while Beth and Graham find themselves at odds over a recent big decision. Dominic gets closer to Natalie after learning they share a sentimental connection, but Natalie worries about what April might think. Meanwhile, Sara wants to keep her latest fling easy and uncomplicated but then learns something shocking about her lover. And, after a fight with her mother, Greer turns to Brenna for support.

When a conflict in Eastern Europe threatens to escalate, Team Scorpion is called on to help facilitate secret peace talks to prevent World War III.

When Jane and Rafael receive news about their baby's health, they revisit moving in together which prompts a surprise from Rafael. Alba gives Jane and Xo relationship advice that they both take to heart, but which leads them to unexpected friction with Rafael and Rogelio. Meanwhile, Petra finds herself with an unexpected ally. Michael tells Jane that her favorite literary idol is staying at the Marbella and Jane is determined to get her own book into her hands.

Ryan believes he has found the connection between Andrew and Mark, but he and the FBI are still unsure if - and how - Joe Carroll might be connected. Meanwhile, tension between Mark, Kyle and Daisy mounts and Ryan soon finds himself in a dangerous situation, in which facing the truth is the only thing that will set him free.

After agents Powers and Trigger take Stan into custody, Dipper and Mabel begin to wonder how much they actually know about their Grunkle Stan.

Norman and Emma each make a decision about their future. Norma sets boundaries with Norman. An unexpected visit causes trouble in Dylan's fresh start.

The queens are challenged to produce a pre-flight safety video for the first airline run by drag queens; guest judges Olivia Newton-John and Jordin Sparks.

Hunters are forced to outthink crafty gators that are too smart to take their bait. One team seeks out some local crabbers to give them some indigenous bait. Another team uses a primitive alternative to the modern hook, while another team decides to use cannibalized gator as bait to lure in a vicious gator-eating monster.

Les hatches a secret plan to put his employees to the test, but how will Seth, Ashley and Karen react when they find out they've also been put under the microscope?

The night shift crew is put to the test when a teenage couple and a young mom land in the emergency room after a serious car crash. Topher, TC, Jordan and Scott tend to the youngsters, who were returning from their secret wedding. As the girl's condition worsens, TC tries in vein to calm her distraught father. Jordan and Gwen tend to the other victim, a young pregnant woman whose fiancé is deployed in Afghanistan. The team hastily arranges a proxy wedding so that she can be married before delivering the baby through an emergency caesarian section. Meanwhile, Paul tends to a wealthy, eccentric hospital benefactor who teaches him it's ok to follow his heart.

Mike's tragic past comes back to haunt him, and he's forced to seek help from an unusual source. Meanwhile, Jimmy's moral compass is put to the test.

Lindy looks deeper into her sister's abduction, turning to Jake for help as things between them heat up. Tommy and Connor investigate the dark internet, bringing to light a shattering revelation about the serial killer.

In a small mountain community, two local people - Camille, a teenager, and Simon - who both died years earlier, suddenly re-appear at their homes. They have not aged, and they are completely unaware of their own deaths.

Camille and Simon assume they can rejoin the world of the living as though nothing has happened, but their return throws their friends and family into a state of turmoil.

Camille's sister Léna has continued to grow up without her sibling beside her, and Simon's wife Adèle is just about to get remarried, to Thomas. Meanwhile, lonely nurse Julie receives a visit from a very strange little boy.

Seven years ago, the town was struck by a series of bloody murders. Now it seems the killings have started up again.

While the team investigates the death of one of three Afghanistan soldiers who are training in the U.S., they discover two other soldiers are missing and must find them before they're forced to reveal classified military operations to their captors. Also, Sam is back to work but his team worries it may be too soon, and Callen realizes he has very little in common with his partner.

Chris and his fiance Whitney will give interviews, plus an announcement of the next two Bachelorettes who are Kaitlyn and Britt.

Darryl McDaniels of Run DMC brings his new comic to the Stash; the guys look at a Marvel Silver Age number one issue.

Rep. John Lewis

Cedric the Entertainer, Daymond John, Ted Alexandro and Maria Hinojosa discuss the Apple Watch and the ethical issues faced by consumers of modern technology.

Coming Soon...

Rhys Darby & Mamrie Hart compete to determine who has the funniest take on the day's pop culture.

Kimmy has an eye-opening experience when Jaqueline introduces her to her plastic surgeon. Titus auditions for a Spider-Man musical.

Things turn ugly when Frank, Jackie, and Heather square off during their first debate. Tom joins Claire on the campaign trail.

Harry wakes from his coma but faces a battle for his sight. Shockwaves ripple through Darwin when Jonny is arrested. Arthur frets over choosing a specialism but finds professional satisfaction in an unexpected place.

Steven and the Gems must retrieve a message from the Wailing Stone; Steven befriends a magic mirror.

Tensions run high as the team works to save a cyclist who was involved in a serious collision with a HGV, and with the patient flatlining, Glen makes a bold move to try to turn things around. Meanwhile, the surgeon comes to a decision about the status of his relationship with Fiona.

The show comes from the South Pole to tell the inside story of one of the greatest scientific quests of our time. In March 2014, there was a discovery that made headlines around the world, with evidence from the Big Bang itself.