warehouse 13 S04E01

A New Hope

The Warehouse team struggles with the horrible reality of the Warehouse's destruction and the tragic loss of Steve Jinks, Mrs. Frederic and H. G. Wells. With matters so desperate, Pete, Myka, Artie, Leena and Claudia must decide whether to knowingly use a dangerous artifact for their own personal gain—at the risk of deadly consequence

warehouse 13 S04E02

An evil within

Pete and Myka are sent to Philadelphia to find an artifact that is the cause of strange hallucinations—people are fearing monsters, but when attacked, only humans are killed. Artie is searching for more information on what evil he unleashed. Claudia tempts fate as she tries to bring Steve back, with the help of someone unexpected.

warehouse 13 S04E04

There's Always a Downside

Pete and Claudia reunite with Hugo, to find different pieces of an artifact that is affecting Hugo's nephew—and several other kids he gave them to at his school. Myka and Steve investigate a case where an artifact is slowly killing a musician—and he knows exactly what it is. In the meantime, Artie and Brother Adrian have a confrontation about the astrolabe. After an incident with the artifact, Steve reveals to Myka the effects the metronome has on him and Claudia.

warehouse 13 S04E05

No Pain, No Gain

Pete and Myka are sent to retrieve World War II dog tags from a woman who is using them to wish away a hockey player's injuries so he might have a successful season. The drawback: while near them, Pete wishes Myka to be nine-months pregnant and it happens. Meanwhile, Artie and Jinks attempt to prevent The Brotherhood from stealing artifacts from the warehouse, artifacts that had once been collected by Artie himself—Brother Adrian's way of "undoing Artie's life work". Steve reveals to Artie the effects of the metronome, and his connection to Claudia. After finding the stolen artifacts, however, they realize that not all of the artifacts stolen are still there. Mrs. Frederic tutors Claudia about the warehouse and its artifacts—how they are created and that not all of them may be dangerous. Finally, Mrs. Frederic visits her grandson in a nursing home.

warehouse 13 S04E06

Fractures

Pete and Myka are sent to discover the cause of a young woman's descent into madness; they eventually discover Lewis Carroll's Mirror has been placed into the world again, and been smashed—but not before Alice jumped into the body of the woman they encountered in the hospital. Racing to find her, the agents discover she is holding a shard of the mirror to body-jump, and that she could be anyone. Artie and Dr. Vanessa go on a date, but the evening is cut short upon hearing the news of Alice's escape, and her need for revenge on Artie. Claudia discovers the down-side to her involvement in using Johann Maelzel's Metronome to bring Steve back. Artie decides to end his relationship with Dr. Vanessa, but she tells him she will wait for him. Back at the Warehouse, Artie rants angrily in the Dark Vault to the Brotherhood, whom he thinks are watching. Unknown to him, it was Leena who heard him.

warehouse 13 S04E07

Endless Wonder

 Steve, Artie, and Claudia try to find where Brother Adrian has been hiding. Meanwhile, a powerful company executive has created a (seemingly) new artifact-related drug with the ability to increase people's height. Myka and Pete must try and stop it before all the victims stretch to the point of tearing apart. H.G. Wells returns, deduces Artie's secret and informs Mrs. Frederic.

warehouse 13 S04E08

Second Chance

 Pete and Myka are sent to Dalton, West Virginia when a man begins to rust. They discover a boxer and steel worker, Cody Bell, who has shrapnel from an artifact lodged in his chest from his time in the Marines. After saving his father from death, the shrapnel has been activated. Claudia and Steve visit Steve's home to release him from the Metronome, and Steve is finally released with his mother's help. Artie, Leena, H.G. and Mrs. Frederic work together to find ways to stop Brother Adrian.

warehouse 13 S04E09

The Ones You Love

 The people that are dearest to Claudia, Pete and Myka are in danger from artifacts sent to them by Brother Adrian. While they rescue their family, Steve and Mrs. Frederic go to the Vatican. They discover that the brotherhood has a dark secret. They also discover the Brother Adrian attacking the Warehouse is a figment of Artie`s imagination and that he is having a psychotic break. The nature of the evil that Artie has created is revealed as himself—the astrolabe has caused Artie to suffer a mental breakdown that has caused him to hallucinate a malevolent apparition of Brother Adrian that "steals" artifacts and unleashes them on his loved ones. In reality it has been Artie that has been stealing the artifacts and unleashing them while in his Brother Adrian "persona". Leena is killed while trying to help him.

warehouse 13 S04E10

We All Fall Down

 Mrs. Frederic and Steve are in the Vatican with Brother Adrian, looking for a possibility to free Artie from the effects of the astrolabe. While doing so, they find a precise description what the Astrolabe is actually doing to him: It has split Artie's personality and the dark side of this personality slowly erases the good side. Meanwhile at the Warehouse, the team finds H. G Wells' research on the dagger from Artie's vision. They find out that Artie wants to use the dagger to break the container of the chinese orchid, which would release a deadly disease—the English Sweating sickness—into the world. While Pete and Myka go to Prague to retrieve the dagger, Steve and Claudia go to Berlin looking for the orchid. Artie forestalls Pete and Myka by using Isaac Parker's noose and goes after the orchid himself, which was not in Berlin. The team rushes after Artie to foil his plans and bring him to his senses, but fail. Artie releases the orchid whereupon his vision of the dagger comes true.

warehouse 13 S04E03

 

Personal Effects

Pete and Myka need the assistance of the rest of the team, as they try to hunt down the rest of the artifacts in Walter Sykes' arsenal. They find everything they are looking for, but complications arise within the team; Jinks discovers a side-effect to the metronome—any pain he may gain, Claudia will feel; Artie, under the influence of Bobby Jones' Golf Clubs, accidentally mentions in not so many words that he saved the world, but that no one will ever know, which worries Leena, as his rage was something she had never seen.