Crowley starts taking human blood again and Abaddon learns of his search for the First Blade. To find the Blade before the Knight of Hell does, Sam and Dean enlist the help of a former Man of Letters.moreless
Det. Kennex and Dorian are assigned as protection for the sole remaining witness to a high profile murder, while Captain Maldonado deals with the case's defendant.
Grace finally learns the truth about Sam's death and confronts his killer. Meanwhile, Jimmy meets with the Chinese and comes to an agreement with Campbell.
Grace is thrown into general holding, but Mitch continues his investigation. Meanwhile, Alex makes a move to take the leadership and attempts to mend some bridges with him.
Grace tries to comfort Jimmy when he believes that his son has been killed. She must then face Internal Affairs.
Mitch and Grace visit the parking lot where she was supposed to meet the Treasury agent and he warns her not to trust Jimmy with her concerns about Max. Meanwhile, Max discovers Grace's real identity and tells Alec.moreless
Grace and Jimmy investigate an old shooting range and he tells her about the missing money. Meanwhile, Mitch helps Grace gain entry into Santa Rita and Tom and Evie are told to move out for a few days.moreless
Following Charlie's death, Jimmy's crew become nervous and Max makes progress on the missing money. Meanwhile, Grace and Mitch find that a dead Treasury agent may be linked to Sam's death.
Grace uncovers a link between the death of her son and some of Jimmy's men. Meanwhile, Max becomes aware of the missing money and Captain Campbell tells Hernandez to find some dirt on Jimmy.moreless
Jimmy handles the aftermath of the fire-bombing, while Alec attempts to get back in his good books. Meanwhile, Mitch helps Grace look into Jimmy's crew and Max makes a deal with the Chinese.moreless
Undercover detective, Grace Travis, believes that her work led to her son being shot and killed. In the process of investigating his death, she pursues a connection with crime boss, Jimmy Laszlo.
When Jimmy Laszlo discovers money missing, Grace manages to convince him he has a traitor in his organisation. Meanwhile, Grace turns to Tom for comfort and Mitch has serious doubts about helping her.moreless
In the series finale, the Department of Defense's closure of Eureka is delayed by random wormhole materializations.
The doubles steadily take over GD, which means Fargo, Allison and Zane are in a fight for their lives and everyone else's as they try to avoid capture and fix the problem.
The Department of Justice arrives to investigate Grace, and Henry struggles with his conscience. Holly receives a message that triggers a chain of events. The question is whether it's her actions or Fargo's malfunctioning signature achievement that are causing the scary incidents all over GD and the town.moreless
Carter and Allison's perfect honeymoon is interrupted when sabotage is discovered in Eureka. Elsewhere, Holly faces another hurdle to remain intact.
While under the influence of a smart drug, Carter becomes a genius like everyone else in town and starts to change the laws of physics. Unfortunately, his condition soon endangers all of Eureka, including Allison's brother who is in town just to meet his new brother-in-law.moreless
Carter and Allison's romantic plans run afoul of a rogue submarine, and it's up to Jo to save their lives … if she can fix the mess at Global Dynamics caused by an out-of-control prankster in time.moreless
After Senator Wen calls off the search, Kevin designs a tool to find the Astraeus ship that is still missing after four months. Unfortunately, the device's assembly stops after Andy and Carter are arrested while stealing a component for it. Elsewhere, Jo's walkabout is rocky, and at the Astraeus crew's location Dr. Marten posits a dangerous theory about their situation.moreless
When the ship with the Astraeus crew returns to earth, its occupants discover that four years have elapsed and time isn't the only thing that has changed.
Kate is asked by Justin to negotiate a case for the FBI but things aren't as simple as they appear.
As Carter and Blake prepare a Christmas surprise for the kids, a wave of energy sweeps over Eureka, transforming everyone into animated characters.
Carter deals with a bank robbery which may relate to the sudden gravity issues besetting the citizens of Eureka. Meanwhile, Fargo's rivalry with Isaac Parrish is boosted when he learns Holly and Parrish went on a date.moreless