Early 20th century detective Isaac Bell protects a promising aviator from her jealous husband in this remarkable adventure from the #1 New York Times -bestselling author. It is 1910, the age of flying machines is still in its infancy, and newspaper publisher Preston Whiteway is offering $50,000 for the first daring aviator to cross America in less than fifty days. He is even sponsoring one of the prime candidates-an intrepid woman named Josephine Frost-and that's where Bell, chief investigator for the Van Dorn Detective Agency, comes in. Frost's violent-tempered husband has just killed her lover and tried to kill her, and he is bound to make another attempt. Bell has tangled with Harry Frost before; he knows that the man has made his millions leading gangs of thieves, murderers, and thugs in every city across the country. He also knows Frost won t be after just his wife, but after Whiteway as well.And if Bell takes the case . . . Frost will be after him, too.