Dexter is in awe of the latest display from the Doomsday killer: the Four Horsemen of the Apocalypse made up of mannequins and human body parts. Testing confirms that the human parts all came from the same body. Deb Morgan, in her capacity as the new Lieutenant in homicide, holds her first press conference which she concludes did not go well. She is certainly very blunt. Meanwhile, Geller is unhappy with Travis' decision to go on a date with a pretty waitress. There's a price to pay for that. Dexter has a family crisis when Harrison has a burst appendix. Back in the lab, Masuka finally learns what Ryan has been up to.