While the Clock Ticked

A RACE AGAINST TIME TO SOLVE A BAFFLING LOCKED-ROOM MYSTERY!

With their famous investigator father, Fenton Hardy, away on vacation, teenage sleuths Frank and Joe Hardy eagerly jump at the chance to handle a perilous new case. Raymond Dalrymple, a wealthy local client, is being terrorized by ominous death threats. The letters warn of a grim fate awaiting him—and they are appearing mysteriously inside a hidden room sealed tight by a heavy, automated time-lock!

How can an intruder sneak past a locked door that only opens on a timer?. As the brothers dive into the puzzle, they stumble into a far more dangerous web of crime sweeping the Bayport harbor. From a notorious band of thieves and stolen jade collections to dark secrets hidden inside an old grandfather clock, every clue pulls the young detectives deeper into jeopardy.

Trapped by a ruthless criminal gang and facing a ticking time-bomb, Frank and Joe must use all their wits to escape. Can the Hardy Boys crack the impossible locked-room riddle, or will their time run out before the clock strikes its final chime?

The eleventh thrilling volume in the world-famous Hardy Boys Mystery Stories!