After being marked by The Hollow's dark magic, both Klaus and Marcel experience the symptoms of a malevolent haunting, forcing the two adversaries on a violent collision course. Meanwhile, Hayley and Elijah head out to speak with Mary after Hayley uncovers a mysterious link between the dark magic and her former wolf pack. Finally, as an exhausted Freya risks her own life to cure Klaus' infection, a guilt-ridden Keelin must decide whether to honor her hypocratic oath and help Freya - or flee the Mikaelson's forever.

Rosie, Villa and TMI head to a small town to investigate the murder of its former mayor. Rosie struggles with feelings of guilt, as Slade faces complications following his kidney donation.

Murdoc moves forward with his plans for revenge against MacGyver by recruiting his recently released former cellmate to infiltrate the Phoenix Complex as a "lab technician" and kill every agent inside.

The queens join the cutthroat Morning Talk Show wars. Naya Rivera and Jeffrey Bowyer-Chapman guest judges.

Mary and Darnley wed in a lavish affair, which proves to be a successful decision in regards to her political standing. James makes an interesting discovery about Greer, while Elizabeth frantically tries to salvage England's power.

While working the murder case of one of the last survivors of the USS Arizona, McGarrett learns about his grandfather's important role at Pearl Harbor. Also, Adam uncovers bone fragments at his new construction job and asks Jerry to help him discreetly investigate.

To show how their smartphone app can improve personal security, two entrepreneurs from Chicago, Illinois, bring a live guard llama into the Tank; two entrepreneurs from Irvine, California, deliver a safer take on the bicycle by innovating the brake system; a trio from Seattle, Washington, have an app that helps shoppers and diners earn free parking in exchange for their business; and business partners from Santa Clarita, California, hope to convince the Sharks to take a shot with their free photo-printing service. Also, a follow-up with former professional football player Al "Bubba" Baker from Avon, Ohio, and his de-boned rib steaks known as Bubba's Boneless Ribs, which Daymond John invested in during season 5.

A witness in a former case of Erin's, asks her for help shutting down a drug operation in his apartment building, she makes it her mission to make the building safe for his family. Also, while investigating a teen's suicide, Danny and Baez uncover information that suggests the death was a homicide, and Frank looks into potential misconduct in the Mayor's office.

Inside the headquarters of evil conglomerate Pesci Co., the unscrupulous Dr. Labcoat prepares for the roll out of the 'Green Pill,' a mysterious cure for the virus plaguing New York City.

Twilight Sparkle agonizes over Starlight Glimmer's future and receives some much-needed advice from her very own mentor - Princess Celestia. While the Mane 6 are on a friendship retreat, Starlight Glimmer loses Twilight Sparkle's friendship map. Afraid her anger might get out of control, Starlight Glimmer casts a calming spell while the ponies search for the lost map.

Twilight Sparkle agonizes over Starlight Glimmer's future and receives some much-needed advice from her very own mentor - Princess Celestia. While the Mane 6 are on a friendship retreat, Starlight Glimmer loses Twilight Sparkle's friendship map. Afraid her anger might get out of control, Starlight Glimmer casts a calming spell while the ponies search for the lost map.

After being infused with incredible power from a Nova helmet, Gamora leads the Guardians and her sister Nebula on a mission to infiltrate the Believer flagship.

Quill and Gamora battle the High Evolutionary, his minion hybrids and a teleport-hijacking Nebula.

Cosmo goes undercover on the Believer flagship but loses his powers when his cover is blown.

When the Believer flagship embeds itself in Knowhere's brain, it causes a planetoid-wide telekinetic zombie outbreak.

When the cocoon opens and reveals a baby warlock inside, the Guardians have to step in to be a positive guiding force to keep his powers in check.

Ant and Dec host the eleventh series of the UK's biggest talent show as judges Simon Cowell, Amanda Holden, Alesha Dixon and David Walliams return to the panel for a sixth year.

A chance encounter with a girl with a star in her eye leads to a terrifying chase across time and space. Bill's mind is opened to a Universe that is bigger and more exciting than she could possibly have imagined - but who is the Doctor, and what is his secret mission with Nardole on Earth?

Stan Cullen hopes to escape the tyranny of a bullying boss by burning down a building on a secure construction site. However, he is unaware that his wife Tamzin has the same goal in mind, and happens to be inside the building he has set ablaze. Meanwhile, Cal confronts Sam, claiming he has been intimidating Lily into working overtime, and Jez wakes to find himself in the bed of Elle's 17-year-old son Kalen, resulting in a tense stand-off in the ED.

The Scouts search for a hole in the wall while Eren and the others learn that someone close may be hiding all the answers.