"Knife Edge" (2009) is a horror / thriller starring: Hugh Bonneville, Natalie Press and Matthieu Boujenah that takes place in a large country mansion in England.
Emma is a successful New York stock broker who has a five year old son Thomas. She is also recently married to Henri who has whisked her back to her home country of Great Britain and surprised her with the purchase of a huge country mansion and a lush estate. Their new life seemed perfect until things start unraveling in the new house.
It turns out the house has a terrible secret in its past. Emma, who has always been able to see glimpses of the past, believes she is now getting visions of murder in the past at the house. She starts to hear a child calling for her from upstairs and it's not Thomas! Thomas has an imaginary new friend named Tobias and carries an old doll around that Tobias gave him. Emma tries to share these visions and her fears about the house with Henri but he is too caught up in his own financial troubles to be of any support.
This turned out to be a great thriller. Filled with spooky atmosphere that an old English Mansion with overgrown estate can provide. An eerie tree that keeps haunting Emma in her dreams also seems to be a part of the secret. Lots of scary moments, suspense and an interesting story keeps you guessing until the end.