New York Times bestselling thriller King & Maxwell, when two private investigators dig into a killer's past--but when their search threatens powerful enemies, it could cost them their lives.

Edgar Roy--an alleged serial killer--is awaiting trial. He faces almost certain conviction. Sean King and Michelle Maxwell are called in by Roy's attorney, Sean's old friend and mentor Ted Bergin, to help work the case. But their investigation is derailed when Sean and Michelle find Bergin murdered.

It is now up to them to ask the questions no one seems to want answered: Is Roy a killer? Who murdered Bergin? The more they dig into Roy's past, the more they encounter obstacles, half-truths, dead-ends, false friends, and escalating threats from every direction. Their persistence puts them on a collision course with the highest levels of the government and the darkest corners of power. In a terrifying confrontation that will push Sean and Michelle to their limits, the duo may be permanently parted.

In this #1 New York Times bestseller, a child is kidnapped at a presidential retreat and two former Secret Service agents must become private investigators in a desperate search that might destroy them both.

A daring kidnapping turns a children's birthday party at Camp David, the presidential retreat, into a national security nightmare.

Former Secret Service agents turned private investigators Sean King and Michelle Maxwell don't want to get involved. But years ago Sean saved the First Lady's husband, then a senator, from political disaster. Now the president's wife presses Sean and Michelle into a desperate search to rescue a kidnapped child. With Michelle still battling her own demons, the two are pushed to the limit, with forces aligned on all sides against them-and the line between friend and foe impossible to define...or defend.

Two ex-Secret Service agents must face a dark world of violence, codes, and spies at a secret CIA training camp in this #1 New York Times bestseller about a mystery that could destroy the nation.

Near Washington, D.C., there are two clandestine institutions: the world's most unusual laboratory and a secret CIA training camp. Drawn to these sites by a murder, ex-Secret Service agent Sean King encounters a dark world of mathematicians, codes, and spies. His search for answers soon leads him to more shocking violence and an autistic girl with an extraordinary genius.
Now, only by working with his partner, Michelle Maxwell, who is battling her own personal demons, can he catch a killer...and stop a national threat.