FilmNation, via Shock Till You Drop, have released the first official teaser trailer for upcoming horror-thriller Insidious.

Directed by James Wan, who launched the hugely-successful Saw franchise, Insidious stars Patrick Wilson, Rose Byrne, Barbara Hershey, Angus Sampson, Ty Simpkins and Andrew Astor.

A family looks to prevent evil spirits from trapping their comatose child in a realm called The Further.

Insidious will be released in the US on April 1.