'Scream Queens' season 2 spoilers: The Green Meanies plot to execute final kill plan

The Green Meanies will finally make their last move in the next episode of "Scream Queens" season 3 after the identity of the third and final killer.

In an episode titled "Lovin the D," Hester (Lea Michele) will call a meeting for all the Green Meanies before they execute their final plan to kill their enemies.

All the three Green Meanies have their own reasons why they plotted to kill the staff members of the C.U.R.E. Institute. Dr. Cassidy Cascade (Taylor Lautner) was instructed by his mother Jane Hollis (Trilby Glover) to kill the hospital staff and patients as the legendary Green Meanie to avenge the death of his father Bill (Jeremy Batiste).

Ingrid Hoffel (Kirstie Alley), meanwhile, turned out to be the second Green Meanie when she confessed to Cassidy that she was out to kill the Chanels to make them pay for killing her sister Agatha Bean (Jan Hoag).

The identity of the third Green Meanie was revealed in the previous episode titled "Rapunzel, Rapunzel," in which former Wallace University professor Wes Gardner (Oliver Hudson) was revealed to be the Green Meanie copycat who is also out to kill the Chanels for driving his daughter Grace (Skyler Samuels) crazy when she was still a part of the Kappa Kappa Tau sorority.

With Wes' other daughter Hester's help, the group of Green Meanies will finalize their biggest kill plan to date to kill Chanel Oberlin (Emma Roberts) and her minions once and for all.

On the other hand, the Chanels will be busy fangirling in the hospital when their TV idol drops by for a visit.

CarterMatt released the synopsis for the upcoming episode, which reads: "The Chanels are overwhelmed when their TV idol, Dr. Scarlett Lovin (guest star Brooke Shields), visits the C.U.R.E. Institute. Meanwhile, Hester calls a Green Meanie summit as the killer(s) put their final kill plan into effect."

FOX will air the ninth episode of "Scream Queens" season 2 on Tuesday, Dec. 13.