During the 1960s, Hammer would sometimes counteract their lavish color Gothic horrors with some effective black & white psychological thrillers; this is one of the latter type.
Moira Redmond plays Grace Maddox, a nurse/companion hired by attorney Henry Baxter (David Knight). Henry is guardian to a very fragile teen aged girl named Janet (Jennie Linden), who as a child witnessed her mother snap and kill her father. Plagued by nightmares, Janet travels home from school and continues to be haunted by visions of a scar faced woman in white (Clytie Jessop).
It would be better for me to not relay too much about the plot, so that potential viewers can experience the twists and plot developments fresh. It manages to avoid being particularly predictable.
Written and produced by famed Hammer scribe Jimmy Sangster, "Nightmare" is good fun, although I don't know if the screenplay would hold up under any intense scrutiny. Still, it is quite entertaining, and slickly directed by ace cinematographer (and sometime director) Freddie Francis. It's got plenty of atmosphere, especially in the opening scene, and Francis works well with the D.P. on this show, John Wilcox. The music by Don Banks is excellent.
The cast is full of solid actors but no major stars. Brenda Bruce as kindly teacher Mary Lewis, George A. Cooper as chauffeur / gardener John, Irene Richmond as housekeeper Mrs. Gibbs, John Welsh as a doctor, Timothy Bateson as a barman, and Elizabeth Dear as the younger incarnation of Janet round out the credited players. The film ultimately belongs to those performers who are required to act out stress and hysteria; they're utterly convincing.
A worthy viewing for any Hammer fan.
Seven out of 10.