When Billie's magic wreaks havoc at home, the Russos end up at Alex's apartment for the weekend. Meanwhile, Justin searches for information about the mysterious Lord Morsus.

When a young boy is caught stealing food, straight-shooting town sheriff Mickey uncovers a disturbing case of child abuse that leads to a high-stakes rescue and a cliffside standoff that could cost lives. Meanwhile, Mickey's daughter Skye is newly sober, but her path to sobriety is complicated by her relationship with a troubled young man whom her mother arrested.

When Vee's fritzing knocks out a fang, an unexpected chain of events draws her and Britney closer just- as Elijah and Sophie race to fix the situation.

As Alex, Justin, and Billie try to prevent Lord Morsus from fulfilling the prophecy, a long-kept secret comes to light.

Vee reconnects with Billie (from Wizards Beyond Waverly Place) and gets a surprise visit from the Vampire Council. Meanwhile, Britney is mad at Elijah for forgetting their plans.

Magicians Hollie England, Giancarlo Scalia, Francis Menotti, and Gabriel Werlen try to fool the veteran duo with their illusions.

In the aftermath of the Zabel Ridge fire, Station 42 faces internal turmoil but must rally together for a high-stakes rescue that tests their strength, loyalty and the future of the firehouse.

Winter season erupts as the fleet battles brutal seas and each other. Sig and Rick's alliance shatters as Keith fights through a debilitating injury and a short-handed crew. The Titan Explorer loses steering in heavy seas, leaving Jake dead in the water.

Guests: An interview with actor and former governor of California, Arnold Schwarzenegger. This week's panel discussion includes Andrew Ross Sorkin, host of CNBC's "Squawk Box" and author of "1929: Inside the Greatest Crash in Wall Street History - and How it Shattered a Nation"; and Mark Cuban, minority owner of the Dallas Mavericks and founder of the Mark Cuban Cost Plus Drug Company.

NYPD detective Danny Reagan teams up with Boston detective Lena Silver to investigate a deadly fire at a tech company. As they dig deeper, they uncover a complex web of secrets involving facial recognition technology, family ties and a search for justice that brings the Silver and Reagan families closer together.

While the family fights, the Pupa and his robot pal hide in an attic and watch home movies.

Trevante's memories return and reveal a shocking truth. Mitsuki wrestles with doubts about the aliens. The WDC and Infinitas go to war.

It's a family reunion! Eugene's daughter Sarah joins him at a historic cottage to celebrate Ireland's patron saint.

Kate weighs a compelling offer. Eidra faces scrutiny over fallout from the Roylin debacle. Stuart pitches a proposal that goes far deeper than policy.

Eduardo's escape plans don't go as expected. While Sílvia harbors a secret and the drugs change hands, Inspector Frias remains focused on the Azores.

Up against Sarah, Rudy wonders if she's still the woman he once knew and loved. Things come to a head in the courtroom and at Tinley/Britt.

While Diana struggle to find a proper work-life balance with Charlie, and McKenna has a hard time dealing with grief, Sam must face the ghosts of his own past.

Sarah's disappearance adds urgency to Frank's search. Havlock's master plan takes an unexpected turn, increasing the number of hostages.

Abba, Eema, and Abby start their Shabbat preparations too late and find themselves without fire or food once Shabbat starts. Stuck in a dark, cold house without anything but veggies to eat, Abba and Eema take the opportunity to explain the meaning of shabbat and start some new traditions on this day of rest.

Valeria is further ostracized after her story goes public. A bank vote decides Samuel and Moishe's futures, and Leo's new friends bring more problems.

Officers excavate the crawl space beneath John Wayne Gacy's home; Gacy shows Amirante, Kunkle and Kozenczak where he disposed of Rob's body; Johnny Szyc and his best friend, Lynn, venture into Uptown.

Our couples are back on the dance floor. Who will take the top spot on the leaderboard this week?

Joy is taken captive by Baptiste, while Iris contacts conspiracy theorist Alfie and asks him to meet her in Rome to help her with the next phase of her plan. But with Teo being directed by Krauss, both Joy and Iris are delivered into the hands of Cameron for an explosive showdown.