Summary Da Vinci investigates the deaths of Ray Stone and Gloria Keane. It looks to be a double suicide, with a succinct suicide note for the pair: "AIDS x 2". Some alarm bells ring in Da Vinci's head when he finds some prescription bottles for AIDS medication in their apartment, as the prescribing doctor is Gus Cook, whose license was once pulled by Da Vinci for malpractice and who Da Vinci is currently investigating concerning the recent death of a boxer. Meanwhile, a woman by the name of Kathleen Mills comes in to speak to Shannon and Williams because of her nightmares. Six months prior, she saw a decapitated head in a bucket in the van of the friend of her then boyfriend, Alvin Pike. The car belonged to Daryl Cunningham, the head she recognized as belonging to Daryl and Alvin's friend, Cory James. Since Alvin is currently incarcerated, Shannon and Williams decide to question Cunningham, who still owns the van. With much circumstantial evidence in hand, Shannon and Williams try to get Cunningham to break under interrogation. Shannon thinks he has a way to break Cunningham if he indeed did kill Cory. Elsewhere, Curtis is worried about Kenny Bell, a new drug dealer in town. Little does Curtis know that Bell is potentially more dangerous to him than meets the eye. Since Pierce didn't talk to Da Vinci, Kosmo and Leary decide to confront him about Curtis. The last piece in the Curtis investigation is the status of his new partner, Marla. Kosmo and Leary ask Taylor to find out which side of the Curtis fence Marla sits. Da Vinci and Kelly butt heads over Da Vinci's want to go to inquest over Darcy Charles' death, Kelly who sees Da Vinci not only ignoring hi advice but using the office to further his candidacy for the Police of Chief job. And the Mayor and Da Vinci agree on the location of the safe injection site, the Mayor however not being totally forthright with issues about the location.

• Crime
• Drama
• Mystery