A biochemist develops a process that reverses ageing but, when he disappears, it's up to Napoleon Solo and Ilya Kuryakin to recover or destroy the process before it falls into the hands of the THRUSH.
Robert Vaughn
as Napoleon Solo
David McCallum
as Illya Kuryakin
Leo G. Carroll
as Alexander Waverly
Maurice Evans
as Sir Norman Swickert
Vera Miles
as Madame Raine De Sala
Ann Elder
as Joanna Sweet
Yvonne Craig
as Wanda
Bernard Fox
as Jordin
Harry Davis
as Prof. Alexander Gritsky
Monica Keating
as Olga
Dolores Faith
as Lorelei Lancer
Ahna Capri
as Do Do (as Anna Capri)
