While on a trip to Greece, Nikki Ferris (Hayley Mills) and her aunt become unexpectedly involved in a murder and jewel robbery. After helping a handsome young man hide from some thugs, Nikki finds...

While on a trip to Greece, Nikki Ferris (Hayley Mills) and her aunt become unexpectedly involved in a murder and jewel robbery. After helping a handsome young man hide from some thugs, Nikki finds herself on their hit list as well. A mysterious yacht and a missing boy, only add to the mystery, as Nikki tries to figure everything out without getting killed.