"Eye Of The Beholder" has Jenna Marshall end up in the hospital when someone lures her to the DiLaurentis house with a text message and then sets it on fire. Fortunately, Hanna and Spencer save her.

"If These Dolls Could Talk" tops it. It starts with Spencer getting visited by Alison (which may or may not have been a dream) and also features Aria's parents threatening to send her to boarding school before Ezra gets fired and has sex with Aria. Also Spencer, Emily, and Hanna are ready to turn in Melissa when police show up arrest Garrett because Jenna gave Toby page 5 of the autopsy. Oh, and Jenna can now see.

"Single Fright Female" reveals Ezra has a son and Paige is most likely part of the A team. Plus the end shows that there is more than one A

"The Lady Killer" reveals that Toby Cavanaugh is part of the A-team, while Paige was the person he and Mona intended to set up as Maya's murderer, who actually was unsurprisingly Nate

"A dAngerous gAme" Toby AND Ali are alive. Mona makes a HeelFace Turn and Aria and Ezra break up . Lastly, someone tries to kill the girls and Mona before Ali pulls them from the fire.

"Now You See Me, Now You Don't" tops them all. Cece Drake is Red Coat, Alison is alive, and Ezra is the leader of the A-Team. Alison is also apparently trying to protect the Liars from the A-Team.

"A is for Answers" Ali was conked on the head and her own mother buried her alive in an effort to protect the perpetrator.

"Taking This One to the Grave": Mona uncovers evidence suggesting that Alison is now working as A, then she is murdered.

"Welcome to the Dollhouse": Perhaps the biggest example of the trope on the show to date: Mona was alive the entire time, having been kidnapped by A and being forced to take on Alison's persona. The liars are also kidnapped by A, and wake up in a dollhouse featuring life-sized recreations of their own bedrooms. It is revealed that 'A' is a person named Charles, who is somehow related to the DiLaurentis family.

"Game on, Charles" Remember Sara Harvey, who was mentioned in one episode in Season 4 as having gone missing the day after Alison, and then never mentioned again? Well, turns out Charles has had her locked in the dollhouse the entire time, and it appears that she is going to play a very important part in the overall mystery.

"The DArkest Knight" Hanna has Noel captive in planning to get him to admit he's A.D.; Alison tells Emily that she's pregnant; Aria sees Ezra's reunion with the very much alive Nicole on the news; Noel escapes with the help of Jenna, and the Liars face off with them in an abandoned blind school; Noel is decapitated by his own axe; Mary overpowers Jenna after she shoots Spencer; Mary reveals that the child she gave up for adoption is Spencer; Toby gets in a car crash with Yvonne; and the end of the episode it's confirmed that Jenna isn't working with A.D. - because she's been kidnapped by A.D.