Pete and Steve search for an artifact that makes a horseless chariot and a life-size chess piece come to life; Claudia combines artifacts in a desperate attempt to revive her sister.

Jon welcomes volunteers. Bran, Jojen, Meera and Hodor seek shelter. Jaime and Brienne discuss his honor. Daenerys balances justice and mercy.

Kiera and an emotionally unravelling Carlos must stop Liber8 from committing a devastating chemical attack on the city.

When Alicia pays a visit to longtime client Colin Sweeney, she finds herself in the unwanted role of witness when a body is discovered in his home. Meanwhile, Eli steps in when an unfortunate picture of Zach threatens to become a public relations nightmare for Peter.

A chance encounter with a suspicious-looking individual leads Jane and Lisbon to uncover a vast human smuggling ring. Meanwhile, Lisbon remains tempted by Pike’s offer to move to D.C. with him.

A chance encounter with a suspicious-looking individual leads Jane and Lisbon to uncover a vast human smuggling ring. Meanwhile, Lisbon remains tempted by Pike’s offer to move to D.C. with him.

While Alison struggles with Aynsley’s death and Cosima grapples with the worsening symptoms of her mysterious sickness, Sarah enlists Art’s help to find Kira and is shocked when she learns where the trail leads.

While Alison struggles with Aynsley’s death and Cosima grapples with the worsening symptoms of her mysterious sickness, Sarah enlists Art’s help to find Kira and is shocked when she learns where the trail leads.

When Sherlock’s brother Mycroft makes a surprise return to New York, his motivations cause discord between Sherlock and Joan. Meanwhile, a missing person case takes Sherlock and Joan inside the world of unmanned aeronautics.

Bellamy leads his crew into Grounder territory as they search for Octavia. Raven can’t help but notice the deep connection between Finn and Clarke. Meanwhile, flashbacks reveal Bellamy’s and Octavia’s childhood on the Ark.