Infernal by F. Paul Wilson

FROM THE PUBLISHER
"The ninth Repairman Jack novel begins with a tragedy that throws Jack together with his brother, Tom, a judge from Philadelphia. They've never been close, and Jack, the career criminal, soon finds that he adheres to a higher ethical standard than his brother the judge." "Determined to get to know his brother better, Tom convinces Jack to go on a wild treasure hunt with him. Armed only with a map pointing the way to a desolate wreck off the coast of Bermuda, the brothers come across something much stranger, and much more dangerous, than mere treasure. Part organic, part man-made, the object is known as the Lilitongue of Gefreda. Ancient lore claims that it is a means "to elude all enemies and leave them helpless."" "Why does Tom want such a thing?" "But there's another, bigger question: If the Lilitongue lives up to the legend, where does it take you? No one seems to know." Matters take a bizarre and ominous turn when the Lilitongue is accidentally activated.