I know about you, Colin. You know I'd never give you up. You're like a...
Who: Frank Costello
Note: Said to Colin Sullivan after Sullivan asks if Costello has told the FBI anything about him. After this line, Colin asks "What, like a son? To you? Is that what this is about? All that murderin'... and fuckin'... and no sons? ". Costello then moves to gun Sullivan down, but Sullivan shoots him dead instead.