A professor and his students perform a dangerous experiment that causes a young woman to lose her sanity.

Jared Harris
as Professor Coupland

Sam Claflin
as Brian McNeil

Olivia Cooke
as Jane Harper

Erin Richards
as Kristina Dalton

Rory Fleck-Byrne
as Harry Abrams

Laurie Paul Calvert
as Phillip

Max Pirkis
as David Q

Richard Cunningham
as Provost

Aldo Maland
as young David Q

Rebecca Scott
as Student #1
John Chard
Boom! Out of Hammer Films, The Quiet Ones is loosely based on the Philip Experiment in Toronto 1972. It involves paranormal research that seeks to prove supernatural entities are in fact manifestations of the human mind. The complete opposite of Hammer's hugely successful The Woman in Black, T...