Lloyd Bridges
— Karl Wallenda
Britt Ekland
— Jenny Wallenda
Taina Elg
— Helen Wallenda
Cathy Rigby
— Jana Schmidt
John van Dreelen
— Herman Wallenda
Michael McGuire
— Arnold Fielding
Ben Fuhrman
— Gunther Wallenda
Travis Hudson
— Lotte Schmidt
Bruce Ornstein
— Mario Wallenda
Stephen Parr
— Dick Faughnan
William Sadler
— Dieter Schmidt
Isa Thomas
— Edith Wallenda
Casey Biggs
— Gene Hallow
Lucinda Bridges
— Nurse
Tino Wallenda
— Nino Canetti (uncredited)