The Bourne Ultimatum Author:Robert Ludlum The Ultimate Jason Bourne Adventure. A small-town carnival two men, each mysteriously summoned by telegram, witness a bizarre killing. The telegrams are signed Jason Bourne. Only they know Bourne's true identity and understand the telegram is really a message from Bourne's mortal enemy, Carlos, known also as the Jackal, the worlds deadliest and ... more »most elusive terrorist.« less