Dexter Riley is a science student at Medfield College who inadvertently invents a liquid capable of rendering objects and people invisible. Before Dexter and his friends, Debbie and Richard Schuyler, can even enjoy their spectacular discovery, corrupt businessman A.J. Arno plots to get his greedy hands on it. Slapstick hijinks ensue as Dexter and his pals try to thwart the evil Arno before he can use the invisibility spray to rob a bank.
Kurt Russell
Cesar Romero
Joe Flynn
Jim Backus
William Windom
Frank Welker
Joyce Menges
Michael McGreevey
Richard Bakalyan
Alan Hewitt
Kelly Thordsen
Bing Russell
George O'Hanlon
Robert Rothwell
Frank Aletter
Dave Willock
Edward Andrews
Jack Bender
Mike Evans
Ed Begley Jr.
Paul Smith
Edward Faulkner
Larry Gelman
Alvin Hammer
Kenner G. Kemp
Burt Mustin
Eddie Quillan
Benny Rubin
Jeffrey Sayre