
From Wikipedia
Catherine Lacey (6 May 1904 – 23 September 1979) was an English actress of stage and screen.
She made her film debut in 1938 as the secretive nun who wears high heels in the Alfred Hitchcock film The Lady Vanishes, but was credited as Catherine Lacy. She was subsequently cast in major films like I Know Where I'm Going! (1945), The October Man (1947), Whisky Galore! (1949), The Servant (1963) and The Fighting Prince of Donegal (1966), in which she played Queen Elizabeth I. In 1966/67 she played in two notable horror films, as a malevolent fortune-teller in The Mummy's Shroud and as Boris Karloff's insane wife in Michael Reeves' The Sorcerers. For the latter she won a 'Silver Asteroid' award as Best Actress at the Trieste Science Fiction Film Festival in 1968.
Eight years earlier she received the Guild of TV Producers and Directors award as Actress of the Year. Her television debut, in 1938, was in a BBC production of The Duchess of Malfi; her last appearance, in 1973, was in the Play for Today instalment Mrs Palfrey at the Claremont.

The Lady Vanishes
1938 · as The Nun

The Servant
1963 · as Lady Agatha Mounset

The Private Life of Sherlock Holmes
1970 · as Woman in Wheelchair

Poison Pen
1939 · as Connie Fateley

Innocent Sinners
1958 · as Angela Chesney

I Know Where I'm Going!
1945 · as Mrs. Robinson

Whisky Galore!
1949 · as Mrs. Waggett

The Sorcerers
1967 · as Estelle Monserrat

Marco Millions
1939

Cottage to Let
1941 · as Mrs. Stokes

The October Man
1947 · as Miss Selby

The Mummy's Shroud
1967 · as Haiti

Pink String and Sealing Wax
1945 · as Miss Porter

Rockets Galore
1958 · as Mrs Waggett

Wine of India
1970 · as Bee

The Shadow of the Cat
1961 · as Ella Venable

The Man in the Sky
1957 · as Mary's mother

Crack in the Mirror
1960 · as Mother Superior