On screen
Cast
191 credited performers
Shaun Cassidy
Joe Hardy
Parker Stevenson
Frank Hardy
Pamela Sue Martin
Nancy Drew
Ed Gilbert
Fenton Hardy
William Schallert
Carson Drew
Jack Kelly
Harry Hammond
Jean Rasey
George Fayne
Lisa Eilbacher
Callie Shaw
George O'Hanlon, Jr.
Ned Nickerson
Janet Julian
Nancy Drew
Robert Karnes
Sheriff King
Edith Atwater
Gertrude Hardy
Anne Lockhart
Character not listed
Fritz Feld
Character not listed
David Gates
Self
Kevin Brophy
Character not listed
Bobby Troup
Character not listed
Robin Mattson
Character not listed
Bobby Van
Character not listed
Val Avery
Character not listed
Johnny Sekka
Character not listed
Lorne Greene
Character not listed
Clive Revill
Philip Bronson
Paul Williams
Character not listed
Mills Watson
Character not listed
George Dunn
Character not listed
Kevin Tighe
Character not listed
Albert Carrier
Character not listed
Linda Dano
Character not listed
Edd Byrnes
Paul Owens
Kim Cattrall
Character not listed
Herb Voland
Character not listed
Pernell Roberts
Detective Superintendant Molly
Robert Wagner
Self
Howard Duff
Character not listed
Lloyd Kino
Character not listed
Julius Harris
Character not listed
Angelo Rossitto
Character not listed
Ray Milland
Character not listed
Nehemiah Persoff
Vladimir
Pamela Franklin
Marla
Casey Kasem
Paul Hamilton
J.D. Cannon
Jason Fox
James Wainwright
Arlo Weatherly
Floyd Levine
Brandon
Wayde Preston
Character not listed
Valerie Bertinelli
Character not listed
Jack Colvin
Character not listed
William Campbell
Character not listed
Nancy Stephens
Character not listed
Macdonald Carey
Character not listed
Mary Louise Weller
Character not listed
Thayer David
Character not listed
John Karlen
Character not listed
Tommy Sands
Character not listed
Kenneth Tobey
Character not listed
Monte Markham
Jack Wall
Adam Roarke
Character not listed
Cesare Danova
Character not listed
Zina Bethune
Character not listed
Richard Kiel
Character not listed
Robert Englund
Character not listed
Ricky Nelson
Character not listed
Josh Taylor
Character not listed
Carl Betz
Character not listed
Maren Jensen
Character not listed
June Lockhart
Character not listed
John Quade
Character not listed
Leon Ames
Messenger
Lloyd Nolan
Character not listed
Kimberly Beck
Character not listed
Robert Horton
Character not listed
Marj Dusay
Character not listed
James Shigeta
Character not listed
Rosalind Chao
Lily
Dorothy Malone
Character not listed
Dane Clark
Character not listed
David Opatoshu
Character not listed
Nicholas Hammond
Character not listed
Barry Primus
Character not listed
Tony Scott
Character not listed
Roger Bowen
Character not listed
Percy Rodriguez
Character not listed
John Pleshette
Character not listed
Leonard Stone
Character not listed
Taryn Power
Character not listed
Irene Tedrow
Character not listed
Pippa Scott
Character not listed
Robert Loggia
Character not listed
Nico Minardos
Character not listed
Dana Andrews
Townley
Darleen Carr
Character not listed
Gordon Jump
Character not listed
Sparky Marcus
Character not listed
Tony Dow
Character not listed
Skip Ward
Character not listed
Melanie Griffith
Character not listed
Roger Davis
Character not listed
Simon Oakland
Character not listed
Stepfanie Kramer
Character not listed
Ana Alicia
Character not listed
Gino Conforti
Character not listed
Deborah Ryan
Character not listed
Jamie Lee Curtis
Character not listed
Parley Baer
Character not listed
Tara Buckman
Character not listed
Mark Harmon
Character not listed
Chao Li Chi
Character not listed
Christopher Connelly
Character not listed
Larry Storch
Character not listed
Frank Parker
Character not listed
Britt Leach
Character not listed
Missy Gold
Character not listed
Bob Crane
Character not listed
Bruce Gordon
Character not listed
Len Lesser
Character not listed
Deborah Walley
Character not listed
Lloyd Bochner
Character not listed
Gary Springer
Character not listed
Harold Sylvester
Character not listed
Don Diamond
Character not listed
Frank Marth
Character not listed
Patrick Macnee
Character not listed
Richard Loo
Character not listed
Marc Alaimo
Character not listed
Fabian
Character not listed
Kim Lankford
Character not listed
William Sylvester
Character not listed
Dina Merrill
Character not listed
Maureen McCormick
Character not listed
Karen Lamm
Character not listed
Queenie Smith
Character not listed
Shelly Novack
Character not listed
James Hong
Character not listed
Cathy Rigby
Character not listed
Michael Swan
Character not listed
Beverly Garland
Character not listed
John Brandon
Character not listed
Antony Carbone
Character not listed
Jack Jones
Character not listed
John Colicos
Character not listed
Royal Dano
Character not listed
John Carter
Character not listed
Troy Donahue
Character not listed
Joseph Cotten
Weldon Rathbone
Anthony De Longis
Character not listed
Michael Pataki
Character not listed
Jack Hogan
Character not listed
Joseph Ruskin
Character not listed
Ian Abercrombie
Sgt. Lander
Albert Popwell
Character not listed
Hunter von Leer
Character not listed
Katherine Moffat
Character not listed
Rick Springfield
Character not listed
Diana Muldaur
Character not listed
Roger C. Carmel
Character not listed
Paul Coufos
Character not listed
Robert Alda
Character not listed
Ed Crick
Character not listed
Craig Littler
Character not listed
Stephen McNally
Character not listed
Howard Platt
Character not listed
Richard Narita
Character not listed
Warren Munson
Character not listed
Stuart Whitman
Character not listed
James Booth
Lt. Buckley
Reggie Nalder
Character not listed
Dan O'Herlihy
Character not listed
Gary Crosby
Character not listed
Jack Ging
Character not listed
Jaclyn Smith
Character not listed
Henry G. Sanders
Character not listed
Vic Damone
Character not listed
Victor Buono
Character not listed
Martin Kove
Pete Miller
Elliott Mason
Character not listed
Liberty Godshall
1st Girl
Lisa Reeves
Becky
Brian Byers
Morgan
Doug Heyes, Jr.
Jerry
Nancy Morgan
Character not listed
Jim Raymond
Character not listed
Dennis Weaver
Self
Hari Rhodes
Lieutenant Astor
Lou Antonio
The Director
John Lupton
Bob Townsend
Jillian Kesner
Paula Clark
Robert Sampson
Keller
Regis Cordic
Paul Chase
Eric Server
Robert Coleman
Vince Howard
Lieutenant