While in Europe searching for their missing father, the Hardy Boys meet Nancy Drew and team up on a case that takes them to a rock festival in Transylvania held at Dracula's castle.
Pamela Sue Martin
Nancy Drew
Shaun Cassidy
Joe Hardy
Parker Stevenson
Frank Hardy
John van Dreelen
Mayor
Leon Askin
Haufman Berger
Paul Williams
Allison Troy
Lorne Greene
Inspector Hans Stavlin
Ed Gilbert
Fenton Hardy
Ruth Cox
Bess Marvin
Carl Esmond
Kolbe
Bernie Taupin
Tim Carstairs
Norbert Weisser
Gurd
fritz field
Fritz
Norbert Schiller
Caretaker
Claude Bessy
Frenchie
Albert Carrier
Paris Hotel Clerk
Roger Til
Paris Police Officer
Walter Janovitz
Waiter
Karen Fredrik
Mandy Richards
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