Dexter investigates the crime scene from last week and finds that a very unique glue was used to attach on a piece of the wing. Masuka hires a new assistant, Louis Green. As Louis goes to find some evidence against the 'Ice Truck Killer' his previous assistant stole from him, Masuka stumble across a piece of paper with an unknown number on the 'Doomsday Killer's latest victim.
Quinn asks Deb for the engagement ring back. It had been accidentally flushed it down the toilet, and Deb felt fairly indifferent. The nanny ends up getting it back. Deb realizes she needs her own place and rents out this place that was a suicide crime scene.
Brother Sam tells Dexter that someone has been causing problems at his auto shop, making it dangerous. Brother Sam visits Harrison in the hospital, where he has a talk with Dexter. Brother Sam tells Dexter he needs to let things go and allow himself to see the light.
Professor Geller tries to get Travis to start making his own kills but he cannot manage. They notice Professor Geller's face on the front page of news - he tells Travis it looks like he's going to have to make these kills without him. Dexter discovers information about Travis and decides to kill him, before he realizes that Travis is just used as bait.
Quinn is called to interview Professor Porter, a hot, young teacher, whom Quinn develops a crush on. Unfortunately, Bautista finds a book of Porter's full of detailed illustrations of Geller's murders.