The senior pupils of St Peter''s High School are on retreat to a secluded outdoor activity centre, coming to terms with the murder of a fellow pupil through the means you would expect: counselling, contemplation, candid discussion and even prayer - not to mention booze, drugs, clandestine liaisons and as much partying as they can get away with.

Not so far away, the commanders of a top-secret military experiment, long-since spiralled out of control, fear they may have literally unleashed the forces of Hell.

Two very different worlds are on a collision course, and will clash in an earthly battle between science and the supernatural, philosophy and faith, civilisation and savagery.

The bookies are offering evens.

The senior pupils of St Peter''s High School are on retreat to a secluded outdoor activity centre, coming to terms with the murder of a fellow pupil through the means you would expect: counselling, contemplation, candid discussion and even prayer - not to mention booze, drugs, clandestine liaisons and as much partying as they can get away with.

Not so far away, the commanders of a top-secret military experiment, long-since spiralled out of control, fear they may have literally unleashed the forces of Hell.

Two very different worlds are on a collision course, and will clash in an earthly battle between science and the supernatural, philosophy and faith, civilisation and savagery.

The bookies are offering evens.