Caleb Summers

"Drop case or else danger for you and your family." This warning addressed to Fenton Hardy not only alarm the famous investigator and his detective sons, but also puzzles them, because Mr. Hardy is working on more than one case. Which one prompted the threat? When more ominous warnings follow, Frank and Joe suspect there is a link between the counterfeiting case they are investigating and a secret case their father cannot discuss since it involves...

Plagued by a sinister voice urging him to commit violent acts, seventeen-year-old Warren tries to overcome these urges by investigating a string of disappearances, but when he faces unsettling encounters at an inn run by the Benders, he must confront hisdarkest impulses in order to survive.