A wealthy author's second wife begins to suspect that her 12-year old stepson may have murdered his mother, who mysteriously died in a bathtub accident.
Mark Lester
as Marcus
Britt Ekland
as Elise
Hardy Krüger
as Paul
Lilli Palmer
as Dr. Viorne
Harry Andrews
as Headmaster
Conchita Montes
as Sophie
Colette Giacobine
as Sarah
