From the back of the book:
ALL ABOARD FOR
A MAJOR MYSTERY!
FRANK AND JOE HAVE THE ULTIMATE CASE ON
THEIR HANDS! TO JUDGE THE SLEUTHING SKILLS
OF FIVE TEEN DETECTIVES IN A CONTEST SPONSORED
BY TEEN WAY MAGAZINE. EVEN MORE COOL-THE
CONTEST TAKES PLACE ON A CARIBBEAN CRUISE
SHIP! BUT IT'S NOT LONG BEFORE SUSPICIOUS
PRANKS THREATEN TO RUIN THE CONTEST! ONE OF
THE TEENWAY INTERNS NEARLY FALLS OVERBOARD.
THE "MYSTERY SCENE" THE CONTESTANTS STUDIED
GETS TAMPERED WITH. AND SOMEONE MAY HAVE
POISONED THE FOOD!
HOW CAN THE HARDYS SOLVE THIS TITANIC MYSTERY?
WITH THE HELP OF FIVE TEEN DETECTIVES. OF
COURSE-ALONG WITH THEIR OWN EXPERT
INVESTIGATING SKILLS. BUT THEY'D BETTER MOVE
FAST. BECAUSE A CULPRIT LURKS BENEATH THE
CARIBBEAN SUN-AND IT'S SINK OR SWIM FOR
FRANK AND JOE.
==========
From inside the book:
The Caribbean Cruise Caper
Joe lay on his bunk in the darkness, listening intently. Something had disturbed him. What?
After a few moments he heard furtive scraping sounds. His mental map told him they were coming from the corridor just outside the door to his cabin.
Stealthily Joe pushed back the covers and stood up. He tiptoed across the dark cabin, felt his way along the wall to the door, and opened it a crack. The light in the corridor, which was left on all the time, was off. A bad sign-someone must have unscrewed a bulb.
A faint, almost indetectable glimmer of light came from the main deck. Joe walked silently along the corridor toward it.
Suddenly a shape loomed up in front of him, cutting off the light. He sensed, more than saw, two hands reaching out to grab him.