This is told from Det. Sgt. Dignam's percpective beginning with the Chinese Deal.

It was the night of the Chinese deal at the docks. That was the best chance for us to get Costello, and put him away. Then Staff Sergeant Sullivan walked in the room. No one had informed him on such short notice. He might have been Massachusetts Police, But I didn't trust that prick for one second. I overheard him talking on the phone.

" Hi Dad sorry something big came up at work I'm not gonna be home for supper"

Who's daddy is he having supper with because last time i checked this guy grew up with his grandmother after his parents died.

Queenen informed everyone that all cell phones in the area are under surveillance by the FBI. That's when I saw it. Sullivan was playing around in his side pocket, and right now he's looking a little nervous. He went on to identify the men as they came into camera view.

" Alright here we go theres Costello, Mr. French, Fitzy, Delahunt and the new guy Billy Costigan."

They entered the building were the deal was about to go down. Microprocessors for a shit load of money. Nothing ever goes according to plan. We couldn't see a fucking thing because the surveillance guy put the cameras in the wrong places.

"Any calls yet?"

"They've turned off their cell phones."

"Narrow the area."

"What you see for service is what you are going to get."

"Yea why the fuck did they turn their phones off?"

"Wait there's still one phone up."

Queenen looked at his phone after he received a text.

"The buyers are there."

That's what I like to hear. Our guy Billy is doing his job. Considering we haven't found his body in some dumpster in Boston with a bullet in his fucking head, I'd say he's doing a pretty fucking good job.

Minutes go buy and we still can't see a Goddamn thing.

"This is unbelievable. Who put the fucking cameras in this place?"

"Oh, who the fuck are you?"

"I'm the guy who does his job, you must be the other guy."

We fucking had Costello right were we wanted him, and he slips away that son of a bitch. Ellerby nearly broke the camera guys nose when those cars left with no one in them. Cameras or no cameras, that fucking snake Costello slipped past us and I guaren-fucking-tee it wasn't because he's smart. He fucking knew.

The next day I had to convince our boy Billy to stay in the great city of Boston. He called looking for Captain Queenan. He told me they knew everything about the operation, the cameras and all.

"You have a rat in your unit that is a FACT. Smoke him out!"

"Yea how do we do that Mr. Fucking genius who didn't even graduate from the academy?"

He wanted me misinform the special investigation unit, and see if the information came out on his side. Theres one thing for sure, if there's a rat in SIU then Costello knows theres a rat in his crew.