The Ambler Warning by Robert Ludlum

Another "secret government installation" holds men prisoner, either because they are mad or because they are to be silenced. Having special talents, Harrison Ambler is a special security risk. When a helpful sympathetic nurse gives him the opportunity to escape, he takes it and heads for what he thinks is home. To his astonishment, no one recognizes him. Nothing is as it is supposed to be. And there are unknown enemies closing in on him. Turning again to the sympathetic nurse he spends thirty-three chapters searching, looking for his past, and embroiled in government deception, murderous plots, and continental flight. An ok read.