Jeffrey Lorenzo

The BAU travels to Houston to investigate a series of murders that have occurred near construction sites and abandoned buildings.

With a bounty on his head, Omar calls in a favor to Bunk. The election finally over, Royce and Carcetti make their peace, and contemplate their respective futures. At school, Prez 'tricks' his students into learning math; Namond finds that the old rules no longer apply; a disillusioned Cutty ponders his job future; and Randy is cleared to return to class. Marlo looks to 'smoke out' his pursuers, infuriating Herc, who begs Carver to help. Expecting the worst, Pearlman gets surprisingly good news from her new boss. Following some high-profile appearances, Daniels's star seems to be on the rise. Bubbles finds his rolling business, and relationship with Sherrod, sabotaged by both sides of the law. Finally, Greggs uses 'soft eyes' at an unsolved crime scene.

In the Season Four finale, the bodies from the vacants pile up while Burrell offers his support to Daniels and admonishes Rawls for crossing him. A distraught Bubbles finds himself at his wit's end after his revenge plan backfires. Proposition Joe looks to the Co-op to defray shipment losses, but finds them not so cooperative. Attempting to get Namond off the corners, Colvin visits Cutty in the hospital to arrange a prison sit-down with Wee-Bey about the boy's future. Omar divides the spoils from his latest heist, then hatches an audacious new plan. Carcetti responds to the governor's school-budget offer; Carver tries to buy time for Randy; Dukie has trouble adjusting to his new peers; Marlo gives Michael new responsibilities on an old corner; Colvin and Parenti take their proposal to City Hall; Namond returns to gen pop; and McNulty looks to pay back an old debt he owes Bodie.

On the trail of missing bodies, Freamon turns to a higher authority after being rebuked by Landsman. Carcetti finds his erstwhile promises of prosperity undermined by the school debt, forcing him to contemplate groveling before the Governor in Annapolis. Colvin approaches a pair of familiar faces--Deacon and Watkins--to keep his experimental class funded. Bubbles considers taking extreme measures to rid himself of his nemesis. Prez is rankled by Dukie's academic promotion; Marimow gets his walking papers; Omar orchestrates another big sting; Namond and Cutty get a first-hand taste of the 'new' Michael; and Carver's promise to look out for Randy ends up looking empty.

Addison must perform a complex in-utero surgery; Naomi and Sam discover their daughter is growing up too fast.