It will come as no surprise to anybody who's tuned into local radio that it's possible to receive electric broadcasts from the dead.

Grieving architect Jonathan Rivers (Keaton) is haltingly reassured with this state of affairs when his novelist wife Anna is found dead.

He's approached by EVP (electronic voice phenomenon) adherent Raymond Price (McNeice) - whose dead 12-year-old son has put a call through.

After initial scepticism, Rivers buys into the whole concept after he keeps getting calls from Anna's dead cell phone.

Pretty soon he's regularly calling round at Price's pad to decode bursts of static into messages only Anna could have sent.

However, she's not alone out there and shadowy figures aren't happy with her resumed connection with her earthbound hubby.

In fact, they're so cheesed off Price is crushed to death under his video recorders, leaving Rivers and fellow EVP believer Sarah (Kara Unger)to heed Anna's electronic warnings.

Director Geoffrey Sax, who cut his teeth on BBC offerings ranging from Cannon & Ball to Dr Who, has fashioned a serviceable supernatural thriller.

Drawing on elements of The Ring and The Sixth Sense, the tension is maintained by concentrating on River's obsessed character rather than any CGI shenanigans.

There are a couple of genuine frights even if the story is let down by some implausibilities and narrative leaps which suggest there's quite a lot of film sloshing around the cutting room floor.

Keaton is fine as the widower whose despair turns to obsession with the paranormal and there's a nerve-tingling frisson as his spectral opponents get busier.

It's also good to see a thriller where the director has the courage of his convictions not to opt for the easy cop-out.

If you're on its wavelength. then this is worth tuning into.

Tim Evans