Supernatural's Winchesters will pilfer Magnus' collection of paranormal artifacts to dangerous ends during "The Werther Project."

A Letter From Dean Is Always Bad On 'Supernatural', Jensen Ackles Pens A Note For Season 10 Finale

Sam (Jared Padalecki) go to great lengths in order to save Dean (Jensen Ackles) as Episode 19 opens, and the hunter will dip into a deceased Man of Letter's horde as part of his quest. Ganked in season 9, Magnus curated this menagerie of magical creatures and items, and the Master of Spells took precautions against outside tampering.

The Winchester's will learn this hard way when take one of his boxes during "The Werther Project."

Jared Padalecki Calls 'Supernatural' Season 10 Finale 'Very Traumatizing', Compares To 'Swan Song'

"Sam learns that former Men of Letters, Magnus, once built a magical box and Sam sets out to find it in the hopes it can cure Dean of the Mark of Cain," The CW teased. "However, what he's not prepared for is the deadly alarm system Magnus set up on the box. When Sam opens the box, he puts both his and Dean's life in danger."

Padalecki previously warned fans that this episode will deal heavily with suicide and was filmed concurrently to the launch of his "Always Keep Fighting" campaign.

"The episode we finished shooting tonight (and that y'all will watch next month!) actually deals with suicide. In a way that only Supernatural can," Padalecki teased at the time.

Will the security system make the Winchesters consider ending their lives? There is a chance Magnus' spell could prompt flashbacks, especially considering Ackles was spotted filming in the series' old Purgatory location.

"The Werther Project" will air on April 22.

Find out more when Supernatural airs Wednesdays at 9 p.m. ET on The CW. Click the video below to see a preview for the series' next episode, "the Book of the Damned."