纽约两位资深警探特克（罗伯特•德•尼罗饰）和罗斯特（阿尔•帕西诺饰）是一对亲密无间的老搭档，二人合计已在警署工作100年。特克脾气火爆，而罗斯特处事圆滑。最近，纽约出现了一位连环凶手，特克与罗斯特二人负责调查此案。在调查过程中，他们发现凶手有特殊的习惯与高超的射击水平，而更奇怪的是，被害人都与特克有千丝万缕的联系。天使般代表正义的警察，与恶魔般代表罪恶的犯罪者。谁才是真正的特克？一段段迷雾拨开，惊人的真相在内心的黑暗处等待。Turk and Rooster, two aging NYPD detectives and longtime partners, are hunting a serial killer who is murdering sociopathic criminals. They both have personal issues, and when they start working with a younger investigative team, Perez and Riley, tensions between the two teams is inevitable, especially since Turk is now living with Perez's ex-girlfriend, also a homicide detective.