The Wire, Season 5

McNulty:
Explain it to me again, because I tell ya, I think I'm a smart guy, but this shit makes my head hurt.

Freeman:
They think they're up on your killer's cellphone, but they'll never catch a call because this goes nowhere. And meanwhile, using the same court authorization, I'm up on the live wire down at the detail office, listening to Marlo. Every day, you file office and court reports saying there's been no further contac with the serial killer. I file exactly nothing, but use what I hear to rig the case on our real target. - And when it goes to court -

McNulty:
There's no mention of a wiretap - It's all based on a C.I.