Dexter has been fooled by Travis' delusion all this time. After turning to Travis to find Professor Gellar, the blood spatter analyst finally learns in the latest episode of the crime series that Gellar has died and that Travis is the only Doomsday killer.
As he realizes that he has made a terrible mistake, Dexter will move forward by finding out who Travis' next victim is. Speaking to Gellar in his mind, Travis denies that he killed the professor and says that he will finish what they started.
Travis will hunt down a woman whom he calls a w***e while Dexter races to figure out Travis' next victim. Meanwhile, Debra reacts strongly when she, Batista and Mike find the Doomsday killer's hideout, but her brother manages to calm her down.
"Ricochet Rabbit" will air Sunday, December 4 at 9 P.M. ET on Showtime.