An international diamond-smuggling pipeline has opened up and the British Treasury wants to know who's controlling it. Impersonating a captured courier named Peter Franks, Bond infiltrates the criminal ring and finds an unlikely ally in Tiffany Case. As the ring's stateside go-between, she may be just another link in the chain, but Tiffany is also Bond's best shot at finding the elusive figure at the head of the operation - a syndicate boss known only by the initials 'ABC.' But if Bond's cover gets blown, he'll find that the only thing harder than a diamond is surviving the payback of a pair of murderous henchmen.