Invisibility - Ian MacPherson

Rotting in the desperation of a North Korean prison, waiting for his show trial for spying for the CIA, their top nuclear physicist's only hope is his daughter's rescue mission to Japan. She needs to recruit the one person they believe can spring him from his fate in the death camps, our man from Amnesty International, Bo Pett. But first, she must convince him that her father's best secret really works. Invisibility. And then there are various other parties anxious to intervene: the CIA, the JCIA, MI6 - not to mention the North Korea secret police. In the first of his adventures, Bo Pett sets to work.