(CNN)Two worlds. Two identities and the ever-present, very real risk of death. That was the life of Morten Storm, a radical Islamist turned double agent, who's now lifting the lid on some of the world's best-kept secrets. His life is the stuff of spy novels, and he talks about it in his book: "Agent Storm: My Life Inside al Qaeda and the CIA," co-authored by CNN terrorism analyst Paul Cruickshank and Tim Lister. Both men are CNN contributors. He also recently sat down with CNN Senior International Correspondent Nic Robertson. "I had these different names. I had different personalities," Storm said. "I was Morten Storm, Murad Storm, Abu Osama, Abu Mujahid."
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Morten Storm was a radical Islamist turned double agent
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He switched sides when he lost his faith
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Storm says he set a key al Qaeda leader up with a wife
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He decided to go public after a falling out with his Western handlers
His successes, @placeholder says, soon attracted the attention of the CIA.