The case of the mystery cruise : a novelization /
by Carol Thompson.
- New York : Scholastic, c1996.
- 88 p. : ill. ; 20 cm.
- Adventures of Mary-Kate & Ashley ; [bk. 2] .
"Dualstar Publications." "Parachute Press, Inc." "Will solve any crime by dinner time."
While on a cruise, someone steals the twins' father's top-secret computer disk.