Perp and Weapon

The cops have found the perpetrator of the crime they're investigating. The thing is, he's got a gun--perhaps one whose magazine is dripping with ammo. Or he's got a bomb. Or he's poured petrol (gasoline if you're American) all over the place and has a lighter.

The sequence goes like this:
 * 1) Perp yells at lead detective something along the lines of, "I'm gonna take you all down!"
 * 2) Lead detective says "Don't do anything stupid," and then "We can talk about this".
 * 3) A discussion follows, during which the detective feigns sympathy for the perp and the perp confesses to the crime.
 * 4) Eventually, the perp drops the weapon and then comes out with his hands up.
 * 5) The detective drops the sympathy, slams the perp against the wall, and handcuffs him.

A Dirty Cop will probably do worse than slamming perps against the wall.


 * Law and Order and its various spin-offs use this trope liberally.
 * CSI
 * The American version of Life On Mars had Sam Tyler do this at one point.
 * A letter-perfect example happens to the hero of Conspiracy Theory.
 * Criminal Minds does this quite often, but they usually end a lot less happily, as the unsub usually ends up
 * One particularly depressing episode had a war veteran who believed he was still in a war hiding from the enemy. The cops surrounded the place with snipers and told him to surrender, and the veteran saw a small child, and ran toward him telling him to get away or he'd be killed.
 * Bookhunter uses this in its Batman Cold Open. When the library police apprehend a book thief, they find him dousing the books in gasoline, holding a lit match, and threatening to burn everything down if the cops don't back off. Agent Bay solves this the Cowboy Cop way:.