Continuity Goof: When Detectives Danny Regan, Kate Lansing, and Eddie Stone discuss why Otto is not the college supplier nor the killer, Detective Stone states that the drugs from the college campus are from Guadalajara and Otto gets his drugs from Durango. He also says dealers don't change their suppliers without risking serious repercussions, thus he knows Otto didn't do it. Another person is supplying drugs on the campus because the college campus drugs are coming from a cartel in Guadalajara.
Later in the episode after talking to the college drug dealer who names the real college supplier, Detectives Regan, Lansing, and Stone decide to go after him when he gets his next shipment. Detective Stone says they'll be coming from Durango. Yet, earlier he said they came from Guadalajara and dealers don't switch sources. This continuity switch between the two cities occurs throughout the remainder of the episode.