The Teeth of the Tiger is the seventh novel in the Arsène Lupin series. Tasked with finding the heirs to a 100 million Francs fortune, the executor of the estate, Arsene Lupin, goes about finding them.He has 3 months to do so.In the event that none can be found, Lupin himself, gets the money. No wonder then that when the heirs do show up, they do so dead.