By now it must be obvious that this franchise has moved well beyond its sell-by date, and not even the 3D tag makes it better.

Not for the first time the sheer, depressing awfulness of a film begs the question: what studio whizkid thought this garbage worthy of a budget … any budget?

When a horror series reaches IV you get to thinking it’s nearing – indeed has certainly gone beyond – the end.

It wasn’t all that good to begin with so don’t expect anything from the third collection of mad serial killers … a film series that sort of started badly and fell away.

The Jigsaw Killer (Bell) has a cunning and life-threatening plan: he locks a group of people in a booby-trapped shelter.