The Locke family faces their worst nightmare when the person responsible for shattering their lives resurfaces and demands one of the keys.

Tyler and Kinsey feel torn when they figure out why Nina is acting strangely. Bode meets Rufus and Ellie's houseguest. Dodge zeroes in on the Omega Key.

Amid Duncan's unease over a new houseguest, Gabe tries to drive a wedge between Kinsey and Scot, Bode finds an unusual key, and Nina bonds with Josh.

Gabe insinuates himself into Tyler's search for the Memory Key as Kinsey resolves to find out what's going on with Eden. Bode visits an old friend.

The battle over the Omega Key leads to decisions that can't be undone — and a dangerous door that promises plenty of trouble ahead.

While Nina uncovers details about Rendell's past, Kinsey helps out the Savini Squad, Tyler falls in with a bad crowd, and Bode finds another key.

Locating a powerful new key sends Bode's spirit soaring. Tyler's simmering rage boils over. Kinsey realizes just how much her fear is holding her back.

As the origins of the Locke family magic come to light, Tyler and Kinsey look to protect their loved ones from Gabe's expanding collection of pawns.

Kinsey uses a key to seek vengeance on a school bully. A troubled Nina finds a sympathetic ear. A long-buried memory casts Rendell in a new light.

Kinsey explores the sea cave with the Savini Squad in tow, Nina confronts Ellie over Joe, and Tyler sabotages his relationship with Jackie.

As pieces begin to click into place for the Locke siblings, Ellie opens up about her connection to Dodge, and Kinsey comes clean with her friends.

While Tyler works on a way to help Jackie, Gabe gives Kinsey a deadline to meet his demands, Eden manipulates Josh, and a shaken Nina reaches out.

Sporting a new hairdo and attitude, Kinsey takes a chance with Scot by sharing what's going on inside her head. Tyler tries to impress his crush.

Tyler grows concerned over Jackie's memory loss, Gabe probes the Lockes for information about the keys, and Nina meets a mansplainer at her new job.

Escalating threats and a devastating loss lead the Lockes into a ferocious showdown with Dodge. Back at Keyhouse, Bode confronts a shocking visitor.

Kinsey puts her acting skills to the test when the Lockes and their friends set a magical trap at Keyhouse. Josh fumes over his missing artifact.

With Duncan's emotional state deteriorating, Gabe confronts one of the Lockes, Tyler surprises Jackie on her birthday, and Kinsey faces up to her fears.

At the annual Winterfest celebration, Kinsey tries to play it cool around Gabe while a key found by Bode and Duncan may offer a way to take down Dodge.

Gideon forces Ellie to take him to the missing key, putting an old classmate's life on the line. Nina and Bode attempt to unlock the Harlequin Chest.

With Gideon hell-bent on acquiring the Creation Key, the Lockes race to stop him, leading to a vicious clash — and a decision that changes everything.

A mysterious snow globe unleashes a double dose of trouble at Keyhouse, leaving Bode out in the cold as Kinsey and Nina try to retrieve a stolen key.

After the Lockes move into Keyhouse, Bode makes a new acquaintance — and a startling discovery. Tyler and Kinsey try to start over at a new high school.

Suspicions about Bode's behavior come to a head after an unsettling discovery, while Gideon's patience runs out in his plot to possess the keys.

Gideon's henchman grabs leverage to use against the Lockes as Tyler and Kinsey look for a way to help Bode, who's devising a clever plan of his own.

Gabe forges an unholy alliance with Eden. Kinsey prepares for the premiere of the Savini Squad's horror film. Duncan arrives at Keyhouse with big news.