Sam (Jared Padalecki) and Dean (Jensen Ackles) will be heading on another investigation as they look for a serial killer on the loose in the new episode of "Supernatural" Season 11.

In last week's episode, the brothers finally tracked down Amara (Emily Swallow) in an abandoned asylum while Castiel (Misha Collins) was able to find Metatron (Curtis Armstrong) and convinced him to tell him what he knows about The Darkness. It was revealed that The Darkness was God's sister whom he had to cast off when he created the world.

According to Christian Today, in the new episode of "Supernatural" Season, 11  the brothers are going to look for the long-eared furry animal that is nowhere near adorable, as the killer bunny has been terrorizing a town with its recent killings.

In the new promo video for "Supernatural" Season 11 episode 7, the killer bunny is shown to look like a rabbit-human hybrid with its big scary bunny mask as he does his murders. In the video, the murderer can even be seen taunting the brothers even when he is already behind bars.

Ecumenical News also reports that episode 7 will also mark the return of Sheriff Donna (Briana Buckmaster) who was last seen in the previous season. According to the report, the sheriff will be asking for the brothers' help after encountering a series of murders which can only be explained through the supernatural.

In the promo episode, Sam and Dean tell Donna that ghosts may be involved in the case, and the sheriff was astounded as they believe that the killer bunny is being possessed by a ghost during the time of the murders.

Meanwhile, it was reported that Sam is still having visions, and this time because of some troubling scenes, he will be compelled to ask God for help.

Will Dean be up for this idea? Fans would have to wait as the new episode of "Supernatural" Season 11 airs on The CW this week.