Casts
Burgess Meredith
as Felix Milne
Dulcie Gray
as Patricia Milne
Michael Shepley
as Peter Edge
Christine Norden
as Barbara 'Babs' Edge
Kieron Moore
as Adam Lucian
Barbara White
as Molly Sinclair Lucian
Walter Fitzgerald
as Dr. Norris Pile
John Laurie
as Dr. James Garsten
Martin Miller
as Dr. Hans Tautz
Clive Morton
as Robert Paston
