Nick's godmother, the woman who raised him after his parents died, asks for his helping stealing a mystic artifact. He reluctantly agrees, putting him at odds with Abbie, Ichabod, and Jenny. Meanwhile, Irving is cleared of the charges against him but Cynthia still has concerns.moreless
Ichabod and Katrina attend the Sleepy Hollow Historical Soiree and become embroiled in a murder. Meanwhile, Abbie receives an unexpected visit.
Team Scorpion try to save a boy on Christmas Eve when he gets trapped in a beach-side cave and the rising tide threatens to drown him.
Sylvester is seriously injured when he accidentally triggers an explosive device during an investigation; and Team Scorpion search for who is responsible.
Abbie and Jenny investigate strange suicides at Tarrytown that may be connected to their mother Lori. Meanwhile, Katrina realizes the nature of the baby and prepares to banish it back to Purgatory.
The team tries to protect Cabe's ex-wife, after she uncovers evidence that suggests foul play in the death of a prominent congressman.
Ichabod and Abbie join forces with Katrina to take on a succubus that Henry has sent out to drain the life force from her victims, killing them.
A musician, who created a controversial algorithm that generates hit songs, helps Team Scorpion find a music blogger's murderer. Meanwhile, Drew asks Walter to help him connect with his son.
Henry brings in a doctor to monitor Katrina's condition after her sudden illness. She manages to escape and Ichabod finds her, and they realize that Moloch has a new plan to manifest on Earth. To stop him, Ichabod reaches out to Henry to use his powers to save his mother.moreless
Three convicts break out of prison and the investigation reveals that one of the escapees is a brilliant hacker who is being forced to help the other two steal billions of dollars online. Meanwhile, Paige tries to manage expectations for Ralph when his father returns.moreless
Corbin's son Joe returns from overseas after receiving an honorable discharge after his platoon is wiped out in a bizarre attack. Ichabod and Abbie soon realize that something is wrong with him. Meanwhile, Henry tells Irving that there is a way for him to free his soul, but it has a cost that Irving may not want to pay.moreless
Team Scorpion must pass a mandated psych evaluation or face being disbanded after they are accused of destroying a priceless work of art. Meanwhile, Ralph is reluctant to go to his school's Halloween party, so Paige asks the team to step in and help.moreless
Walter enlists the help of a former troubled team member when a Los Angeles nuclear reactor is on the verge of a cataclysmic meltdown.
A ghostly spirit, the Weeping Lady, kills Ichabod's friend Caroline. After it attacks Abbie, Ichabod realizes that the ghost is going after his loved ones... and Katrina is her next intended victim.
When a child in Sleepy Hollow goes missing, Ichabod and Abbie realize that a Pied Piper-like creature that serves Moloch is responsible.
Team Scorpion go to Las Vegas for a simple casino job, but a robbery leads to Walter's arrest, leaving his colleagues to try and clear his name.
Three young women rob a tour bus, but things go horribly wrong when a man is killed and the women unknowingly steal something of great value that puts their lives in danger.
Ichabod and Abbie discover that Henry is trying to spread a curse of violence, unleashing the darkness in individuals so that they kill. Meanwhile, Jenny discovers who was responsible for her mother's imprisonment at Terrytown, and Frank learns the truth about his lawyer.moreless
A bomb strike threatens the Internet infrastructure for the entire Southwest. Meanwhile, Team Scorpion fails a military training operation and becomes determined to prove themselves.
To defeat the Horseman, Ichabod and Abbie seek out a patchwork man that Franklin and the Sisterhood built to oppose Moloch's servants. Meanwhile, the new sheriff arrests Jenny and Frank explains that demons killed his supposed murder victims.moreless
Scorpion is called in to save the Governor's daughter when she is somehow "bio-hacked" with a deadly virus and is given 24 hours to live. A letter about his sister, gives the case new meaning for Walter.moreless