LONDON — Embankment Films has boarded as sales agent on Sigma Films and Thruline Entertainment’s horror “Hush,” starring Sophie Cookson (“Kingsman: The Secret Service”).

Olaf de Fleur (“Brave Men’s Blood,” “City State”) will direct and Sigma’s Brian Coffey (“The Legend of Barney Thomson,” “Starred Up,” “Citadel”) and Thruline’s Danny Sherman (“The Wild One Hundreds,” “Bathing Flo”) will produce.

The film centers on siblings Jackson and Angela (Cookson), who run a profitable ghostbusting racket, swindling the bereaved with fake detection equipment and phony paranormal visions. Hired to investigate a haunted old foster home, the team uncovers its terrifying past: girls brutally silenced by a sadistic killer. But the very real supernatural terrors are the least of their problems when they discover a far greater evil lurking in the isolated house.

“Hush,” originally a horror novella written by E.M. Blomqvist, was adapted by Ben Ketai (“The Forest,” “The Strangers 2,” “30 Days of Night: Dark Days”), with revisions by Eva Konstantopoulos.

Icelandic director De Fleur won the Teddy award for best feature at the Berlinale in 2008 for his first film, “The Amazing Truth About Queen Raquela.” His thriller “City State” is being remade as “The Wild One Hundreds” in the U.S. De Fleur is developing an original science fiction thriller called “Revoc” with Mandeville Films and Summit Entertainment.

“Hush” starts shooting in Scotland in October. The pic is supported by Creative Scotland.