A vacationing American and a sultry Russian thief lead police and smugglers on a deadly chase through Moscow.

An American journalist arrives in Berlin just after the end of World War Two. He becomes involved in a murder mystery surrounding a dead GI who washes up at a lakeside mansion during the Potsdam negotiations between the Allied powers. Soon his investigation connects with his search for his married pre-war German lover.

Mercer's brother, an amateur pilot, crashes on an island and is killed by a giant spider. A year later, when Mercer goes in search of him, she discovers a breed of poisonous arachnids ready to attack.