While Pete and Myka investigate a series of artifact-related growth spurts, Artie reluctantly takes Steve and Claudia with him to track down Brother Adrian before he can steal more artifacts from the warehouse.

The Brotherhood continues its assault on Artie’s life, targeting someone close to him with Alice Liddell, the imprisoned spirit within the Dodgson Mirror. Meanwhile, Claudia learns of the connection between her and Steven.

While Pete and Myka go to Toronto to investigate an invulnerable hockey player, Steve helps Artie track down stolen artifacts while Claudia meets with Mrs. Fredericks to discuss her future as a warehouse guardian.

While Pete and Claudia help Hugo Miller track down a bag of marbles at a boy’s academy, Myka and Steve travel to New Orleans on the trail of another artifact while Artie meets with Brother Adrian.

A cache of Walter Skyes’ stolen artifacts turn up and all six agents go into the field to recover them. Artie unexpectedly reveals his secret to Leena, while Steve begins to realize the downside of the metronome that brought him back to life.

While Claudia tries to help a friend and gets unexpected help, Pete and Myka investigate an artifact that causes crowds to see certain individuals as monsters… and attack them.

In the aftermath of the warehouse’s destruction, the Warehouse team races against the clock to find a way to undo time itself and put right what went wrong. However, Artie finds himself facing a difficult decision when he is warned that saving the warehouse will unleash an even greater evil.

Pete Lattimer is hit in the head by an artifact and wakes up to a life where he was never born. Pete must hunt down and persuade the Warehouse team (none of whom recognize him) to go on this life or death mission with him to vanquish a long dead nemesis from the past to get everyone’s lives back.

Pete and Myka race to stop Sykes from using his own cache of artifacts to destroy them and the Warehouse.

As Sykes begins his end game, the agents discover that Helena is still alive… and teaching high school literature. Meanwhile, Jane reveals the full extent of her plan but one agent will lose their life carrying it out.

Myka and Pete deal with a plague of zombies in Ithaca, while Claudia deals with a new romance, a prophecy of death, and a rejection from a friend.

While Pete and his mother Jane try to determine the origins of their mysterious opponents, Myka and Claudia travel to Portland to stop a girl who can apparently vaporize anyone she hates with blasts of radiation.

Sally Stukowski and her partner make their move, attacking the Regents and using an artifact to trap them in a building and bring it down around them.

While in Denver, Myka picks up the trail of the counterfeiter who killed her former partner, Sam Martino. Meanwhile, Artie, Claudia, and Steve interrogate a dog that witnessed the theft of an artifact.

Pete, Claudia, and Myka are called in to help Fargo, who is trapped in a virtual reality swords & sorcery game. Meanwhile, Artie and Steve are summoned to New York to recover an artifact… by FBI agent Sally Stukowski.

When a series of mysterious disintegration deaths occur in Pittsburgh, the team discovers that the artifact responsible, Joshua’s Horn, has ties to Helena’s time as an agent in 1893.

Pete’s ex-wife arrives in town to remarry, but an artifact may derail the wedding. Steve and Claudia visit a Civil War reenactment in search of an artifact

While Artie and Claudia meet with Vanessa Calder and Hugo Miller to investigate a computer virus that transforms people into clay, Myka and Pete wake up naked in bed and try to find a missing Steve.

While Pete and Myka go after someone using an artifact to induce Alzheimer’s, Claudia goes on her first case as a full agent with Steve to track down Typhoid Mary’s knife.

When we last left agents Myka Bering and Pete Lattimer at the conclusion of season 2, Myka had decided to leave the top secret team with little to no warning. As season 3 begins, Artie fills Myka’s shoes with ‘The New Guy,’ which also happens to be the name of the season premiere episode.

As the Warehouse team prepares to celebrate the holidays in snowy South Dakota, Pete and Myka are called upon to hunt down a malevolent Santa Claus. Meanwhile, in time for Hanukkah, Artie and his estranged father, Isadore Weisfelt reunite after 30 years.

The team tries to track down their rogue member, and discover the artifact they have is unexpectedly powerful. Meanwhile, Claudia wonders about her future with the Warehouse team and Pete must choose between Kelly and the mission.

When Mrs. Frederic is stricken ill, the agents must search for a cure before it’s too late. Their quest takes them to Egypt and the long-lost Warehouse 2.

Pete and Myka use H.G. Wells’s time machine to travel back to 1961.

Someone is using Artie’s artifacts to commit a series of murders.

The agents hope to spend a weekend relaxing until an artifact gets in the way.

Claudia has just been given her first assignment, but when it involves a real human torch and H.G. Wells could it be too much for her to handle? Not to mention an appearance by an old love of Artie’s

Mrs. Frederick secretly recruits Pete to find a mole within the organization who is buying artifacts. However, when the mole finds out, they go after those closest to Pete.

Douglas Fargo of Eureka’s Global Dynamics is sent to Warehouse 13 to help update its aging computer system. This triggers a seemingly sentient computer virus that sends the Warehouse into lockdown and traps the team inside.

When young super models rapidly age 50 years overnight, Pete and Myka go undercover in the glam world of high fashion to discover who – and what – is behind the transformations.

When an artifact meant for the Warehouse turns up in the small town next door, the team finds themselves in the middle of a B-movie meltdown complete with cowboys, gladiators, sci-fi robots and beach storming marines. Their only chance of survival rests with the man who invented television, Philo T. Farnsworth.

A super-powered vigilante is at large in Detroit, and the agents try to track down the person responsible. Meanwhile, things between Leena and Claudia are still tense, and Artie is haunted by the spirit of his dead friend.

In the season two premiere, we pick up right where we left off. MacPherson has blown Artie to smithereens, and disappeared. Is Leena really a traitor? Where has Claudia gone? How will Pete, Myka and the Warehouse fare without Artie? What other havoc did MacPherson wreak when he was alone in the Warehouse? And is there yet a new villain on the horizon?

The team discovers that MacPherson is auctioning artifacts he has siphoned from the Warehouse shelves.

After receiving word that her father is dying, Myka travels home to see her parents.

Artie gets questioned by the Regents and Mrs. Frederic. Meanwhile, Pete, Myka and Claudia become trapped inside Warehouse 13, where a dangerous predicament unfolds.

Pete and Myka visit a Florida prison to probe a spate of unexplained suicides. Meanwhile, Claudia changes a light bulb with the help of an artifact.

Pete and Myka go to Las Vegas to fetch an artifact that is helping a couple of gamblers, but the mission goes awry when Myka becomes trapped in a famous author’s mirror.

Pete and Myka return to Washington to intercept a samurai sword that is to be presented to the president, and they discover a competitor for items that belong to the warehouse.