Spencer is after Ezra. She wants to bring him down no matter what. "Pretty Little Liars" Season 4 Episode 18 titled, "Hot For Teacher," will be an exciting instalment. What's in store for the girls? There's a new mystery. Spencer will uncover the secrets and ready to anything for that.

Spencer Determined To Prove Her Theory

Spencer has always been the first to share her suspicions with the Liars. She ensures the girls listen to her theories. But the official synopsis of "Pretty Little Liars" Season 4 Episode 18 teases that Spencer is more determined than ever to prove what she has before sharing the same with the girls. This is important here because she doesn't want to approach the Liars with unproved stories. The reason is that her theory might have devastating effect in one of the Liars and she is none other than Aria.

Hanna Questions Spencer

Only Spencer is not a detective here. Hanna is also trying to catch on and showcase her investigation skills. Hanna starts to suspect Spencer's odd behavior. It will be good to find out Hanna can unearth Spencer's secret before she is even ready to share with others. The promo teases that Hanna is, indeed, suspicious about Spencer's behavior.

Hanna And Detective Holbrook

Hanna and detective Holbrook's friendship is blossoming.

Spencer And Her New Habit - The Pills

In the Canadian promo for "Pretty Little Liars" Season 4 Episode 18, money exchange takes place for pills. "Come see me next week if you need more," Brenda said to Spencer.

Ezra And Aria

In the Canadian promo, there is one Aria and Ezra scene.

"You have to start thinking of me as the person you are closest to," Ezra said to Aria. She must know that this is certainly not a great idea.

"Pretty Little Liars" Season 4 Episode 18 titled, "Hot For Teacher," airs Tuesday, Feb. 4.

Credit: YouTube/PLLDHFr