Last week on "Teen Wolf," Deaton showed Stiles and Scott the pictures of Dr. Valack's experiments in Eichen House. It was revealed that one of the doctor's favorite things to do to his victims is to drill holes in their heads, which would amplify their powers. Scott couldn't let that happen to Lydia, so his whole pack worked together in hopes of rescuing her.

Kira caused a blackout, which allowed her and Malia to break into Eichen House. However, Stiles, Scott and Liam couldn't get in one of the doors because the key card reader on the door was gone. Scott and Liam broke the door, and Stiles ran in to save Lydia. Upon seeing her, Stiles was horrified to find out that she already had a hole in her head, and she told him to leave before Valack saw him. Stiles hid, while Scott and Liam got into a fight with a few guards.

This week, Scott tries to rescue Lydia before time runs out, but it's not going to be an easy feat for his as he is still trapped in Eichen House with Theo and the Chimera pack.

In the promo clip for the episode titled "Lie Ability," Lydia is seen strapped to a chair and being tormented by Valack. The doctor turns on a device which emits a horrible sound, and Lydia shudders as the sound of hundreds of people screaming echoes throughout the room. Valack tenderly tends to the hole on the left side of her head as he tells Lydia to hold on a little longer.

Valack turns a knob on the device, and the sound gets louder.

"Focus on this sound and my voice," he tells Lydia. Lydia sees the dead nurse in the room, and Valack tells her not to worry.

"Nurse Cross was not as strong as you," he says.

"Teen Wolf" airs Tuesdays at 9 p.m. on MTV.