THE BOURNE IDENTITY by Robert Ludlum

The Bourne Identity is a 1980 spy fiction thriller novel by Robert Ludlum that tells the story of Jason Bourne, a man with remarkable survival abilities who has retrograde amnesia, and must seek to discover his true identity. In the process, he must also determine why several shadowy groups, a professional assassin, and the CIA want him dead. It is the first novel of the original Bourne Trilogy, which also includes The Bourne Supremacy and The Bourne Ultimatum.