Kali (3) wraps up the events of Season 2's two-part cliffhanger as Magnus continues to defy her Sanctuary brethren, risking her life to save Big Bertha from Wexford. To help Magnus, and stave off a series of massive tsunamis threatening millions, Will places himself in mortal danger by re-establishing his psychic connection to Kali.

Will suffers from amnesia after his near-death experience; visitors are intent on finding out what is in his memory.

In order to protect the public, Team Sanctuary is forced to stage a bank heist after a seemingly routine retrieval of an Abnormal egg goes haywire.

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Kate becomes host to an abnormal that grants super powers.

Will and Henry travel to the UK to follow up on a werewolf sighting and end up uncovering a dark connection to Henry's past and future.

Her distant past leaves Magnus fighting for her life in an old, abandoned building. And, in order to ensure the safety of Hollow Earth, she must make a deal with the devil - a devil who appears to have come back from the dead to threaten her present - and future.

Magnus tells Will about her past with Adam Worth (Ian Tracey) and his link to "The Five"; Tesla divulges that Druitt may have additional information about Adam; Will makes a shocking find while analyzing blood tests.

Will releases Adam in an effort to cure Magnus...and find the hidden city.

Seeking a gateway to the secret subterranean city, Magnus leads a treacherous mission to Tibet - telling a bitter Adam that he must stay behind while promising to bring back a cure for their radiation sickness. Because of their source blood, Magnus insists that Tesla and Druitt stay behind as well, taking the only shield Tesla was able to construct for herself. The hidden city, however, is rigged with deadly security traps - and death awaits the team at every turn.

Magnus continues her struggle against Ranna Seneschal, the Hollow Earth tyrant who ostensibly put her and her team to death in Hollow Men, Season Three's first-half-ending cliffhanger.

Returning home from an overnight trip, Magnus is stunned to find the Sanctuary in a complete and utter shambles - only hours before a scheduled inspection by a UN Security Team. A bruised and battered Henry only adds to the mystery by claiming that he was attacked by Will.

Looking to share a quiet, "normal" evening out with Abby, Will and his date are abducted en route to the restaurant by a desperate gang leader who faces certain death without their help. Then, upon learning the abductor's identity, Magnus suddenly ceases all attempts at rescue.

Magnus reaches out to Hollow Earth for help when Will suddenly begins transforming into a mysterious, scaly creature.

Will and Henry's double date goes awry when Magnus tasks them with an Abnormal delivery.

Magnus and Tesla investigate a former Praxian stronghold and unintentionally stumble on vampiric secrets.

Discover Magnus's role in a turning point of World War II history.

A colleague vanishes amid unexplained disappearances in Normandy, France, where Magnus and her team run into a military blockade during their investigation.

Helen and Will find themselves in an alternate reality, living as suburban neighbors, who experience unsettling dreams that disrupt their new careers.

Receiving word that a large group of Abnormals has been spotted near a South Dakotan cave entrance, Magnus realizes it's the first wave of Abnormals emerging from Hollow Earth.