When the leader of North Korea is catastrophically injured, his incapacitation inadvertently triggers a "dead-man's switch," activating an army of sleeper agents in South Korea and precipitating a struggle for succession. Jack Ryan, Jr. is in Seoul to interview a potential addition to the Campus. But his benign trip takes a deadly turn when a wave of violence perpetrated by North Korean operatives grips South Korea's capital. A mysterious voice from North Korea offers Jack a way to stop the peninsula's rush to war, but her price may be more than he can afford to pay.

Doc Immelman is alombekend vir sy avontuur- en jagverhale. Erns Grundling noem hom “Namibië se eie Hemingway”. Bloed op die duine en ander verhale is ’n keur uit sy kortverhale wat tussen 1955 en 1963 in Die Huisgenoot en Die Brandwag verskyn het. Die bundel sluit verder die novelle “Koms dans, Klaradyn” in, wat oorspronklik in ’n Seisoen vir Romanse (1966) verskyn het.