THINKFilm International has come on board for world sales (excluding Australia and New Zealand for Under The Mountain, to be directed by Jonathan King. King's most recent film is the international hit Black Sheep.

Fantasy adventure thriller Under The Mountain is based on the novel by popular New Zealand author Maurice Gee. The film is about two teenage twins who investigate an eerie derelict house and have to battle dark forces unleashed in Auckland.

THINKFilm will introduce the project to buyers at the forthcoming American Film Market. The project will start shooting in winter 2008 on location in New Zealand.

Weta Workshop, which famously worked on The Lord Of The Rings trilogy, will work on the film's creature effects.

THINKFilm's AFM slate also includes another recent addition, Argentina-set thriller The Appeared.