Knife Edge is a 2009 British thriller film directed by Anthony Hickox and starring Natalie Press, Hugh Bonneville and Tamsin Egerton.

A successful Wall Street trader returns to Britain with her family, but her new home in the countryside contains a disturbing secret.

Her son Thomas's new friend Tobias, has the same name as the little boy who was murdered in the house 30 years ago.

Anthony Hickox directed the thriller and was produced by Fiona Combe, Pippa Cross and Janette Day.

[2] The film was based on a screenplay from Fiona Combe, Anthony Hickox and Robb Squire.