You do not have to read these books in order, however Book 3 includes characters from the other two books.
They were orphans, Chris and Saul–raised in a Philadelphia school for boys, bonded by friendship, and devoted to a mysterious man called Eliot. He visited them and brought them candy. He treated them like sons. He trained them to be assassins. Now he is trying desperately to have them killed.
Drew Maclane was a star agent-until the day the killing had to stop. He withdrew and for six years lived the life of a hermit in a monastery. But someone has tracked him down, leaving a trail of corpses. Someone who knows all about him, who knows how to draw him back into that electrifying(…)
From the Vatican to the Swiss Alps, from Australia to the heartland of America, the two masterful operatives known as Saul and Drew are being drawn together to solve a violent riddle: Why have ten old men been abducted from around the world? When the agents, weary of their own covert wars, begin to investigate,(…)