The Rubber Band

From the publisher:

> In all his years of detecting, the unflappable Nero Wolfe has never encountered an investigation as damnably messy as this one. For what began as a clean case of larceny quickly sank into a quagmire of blackmail and broken promises, international scandal and cold-blooded murder. >Now Wolfe and his assistant, Archie Goodwin, must bridge eras and oceans to find the link between a Wild West lynching and a respected British peer. Only then can they save Wolfe's beautiful young client - and a hotly disputed stake of a cool million dollars.