STEWART EVANS is a police officer with the Suffolk Constabulary. A lifelong collector of crime memorabilia, he has a large library of Ripper books and copies of all the existing police files on the murders.

PAUL GAINEY is a veteran journalist who has covered such celebrated cases as the Lockerbie bombing. Since 1991 he has been Press Officer of the Suffolk Constabulary.

Does the bloody trail of Jack the Ripper finally lead to America?

This headline-making book offers convincing proof that the serial killer who terrorized London in 1888 was, in fact, an American. Spurred by the startling discovery of a letter written by a Scotland Yard inspector, two veteran police investigators have traced the shadowy movements of a self-styled "doctor" from St. Louis who had a criminal record spanning both sides of the Atlantic. Two decades after the Ripper's murderous spree, Inspector John George Littlechild, then retired, laments in his fateful letter: "to my mind a very likely [suspect] . . . was an American quack named Francis Tumblety. . . his feelings toward women were remarkable and bitter in the extreme." Littlechild expresses dismay that Tumblety, who was in custody only briefly, was ever granted bail, enabling him to flee London-just as the murders ended. The Littlechild letter, printed in this book, provides crucial details either overlooked by police officials at the time of the investigation or later suppressed because they would reveal the same officials had allowed their prime suspect to slip through their fingers.

Sifting through the entire historical record and their own surprising discoveries, Stewart Evans and Paul Gainey have created a true-life detective story that will fascinate all readers of Arthur Conan Doyle, Wilkie Collins, and Charles Dickens. Vividly evoking the mean streets of Victorian London and the wave of terror that swept the city with the Ripper's grisly crimes, they convincingly paint a portrait of history's most infamous serial killer.