There's a new Dread Doctor in Beacon Hills.

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Teen Wolf's Doctor Valack (Steven Brand) is the town's premier expert on the steampunk villains, and it just to be really creepy, the Doc has one of those creepy masks hanging out in his Eichen House office. Not a good sign.

The season 5B fresco teased the debut of a fourth Dread Doctor, but based on its three eyes, we were almost certain it would be Valack himself. A new sneak peek for "Amplification," however, has put the kibosh on that theory.

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Instead of donning the mask himself, Valack will slap it on one of Eichen House's unsuspecting orderlies. While the painful transition is not something we'd wish on anyone, that curly-haired witch had it coming. The question that remains, however, is what horrors this new mad scientist will visit upon Scott's pack.

Luckily for Lydia, Valack won't be the only one sneaking around the asylum in episode 15. It's Scott (Tyler Posey), Stiles (Dylan O'Brien), Liam (Dylan Sprayberry), Malia (Shelley Hennig), and Kira (Arden Cho) to the rescue. No one keep's their Banshee down.

Find out more when Teen Wolf airs Mondays at 9 p.m. ET on MTV.