Klaus will be forced to trust Freya in order to save his sister Rebekah in the next new episode of "The Originals."

In the last episode, Dahlia, a power-hungry and vengeful witch played by actress Claudia Black, was introduced to the show and proved to be a serious threat. Fans also learned about Freya's history with Dahlia. Meanwhile, evil witch Eva Sinclair regained control of her own body, leaving Rebekah trapped and powerless.

The next episode -- which is titled "Exquisite Corpse" and scheduled for April 6 -- will feature Dahlia's formal arrival to New Orleans, notes Carter Matt. In addition to dealing with Dahlia, Klaus will have to deal with the return of his infamous father, Mikael Mikaelson, while trying to protect Baby Hope.

A sneak peak also shows that Klaus will have to put his trust in Freya in order to save Rebekah's life. In the meantime, Elijah and Hayley will do all they can to save her.

According to Dread Central, The CW released the full synopsis for this installment, which reads as follows:

"Desperate to find a way to vanquish Dahlia (guest star Claudia Black), Klaus (Joseph Morgan) soon finds himself face-to-face with another deadly threat - Mikael (guest star Sebastian Roché). Meanwhile, as Hayley (Phoebe Tonkin) and Rebekah (guest star Maisie Richardson-Sellers) work with Freya (guest star Riley Voelkel) to track Dahlia's whereabouts, Elijah (Daniel Gillies) and Marcel (Charles Michael Davis) prepare a safe house in Algiers with the help of Josephine (guest star Meg Foster). Elsewhere, determined to protect Hayley and baby Hope, Jackson (guest star Nathan Parsons) approaches Hayley with a risky idea that leaves her conflicted. Finally, Aiden (guest star Colin Woodell) finds himself torn between his loyalty to Jackson and his secret alliance with Klaus."

Season 2, Episode 17 of "The Originals," "Exquisite Corpse," will premiere Monday, April 6, on The CW.

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