Da Vinci, Kosmo and Leary investigate the death of Lee Fallon, previously a police officer but now a boxer who was found outside they gym where he worked out. His body was found the morning following the night of a charity boxing event. Once Da Vinci hears the name of Gus Cook, the ring doctor, he immediately thinks the good doctor may have been involved in the death. Da Vinci previously pulled Cook's license for malpractice. Shannon and Williams investigate a dead body found in the middle of a field. The body was dumped there. They suspect that a gray sedan seen in the vicinity has something to do with the death. Once they find the deceased's wallet, they at least find where the man was killed. With the ongoing investigation in Carla and Danny's deaths, Carla's neighbour positively identifies Curtis as at least a supplier of drugs. Kosmo and Leary look for Sue, who is one of the few people with connections to Curtis that could help them in this investigation on him. Dr. Maria Donato replaces Sunny as pathologist in the Coroner's office. And Pierce slowly comes back into Da Vinci's good books when he at least agrees to read Da Vinci's proposal on a safe injection site.
—Huggo