Biology teacher Jessica Martin (Kim Basinger) walks her son to the school bus and sees him off, then returns home to get on with her day, but no sooner has she greeted her housekeeper than a group of thugs enter her house, shoot the housekeeper and bundle Jessica off to a location she does not recognise, locking her in the attic. Before she can do anything to call for help on the telephone that is up there, the lead heavy (Jason Statham) advances with a sledgehammer and smashes it to pieces, then leaves, with the terrified woman none the wiser about what she is doing there or what these men want. But then she notices the phone still has a current running through it and realises if she can rig it up properly, testing the wires can result in a call for help...
Ah, remember when mobile phones, or cell phones as they are called here, this being an American movie, were an exciting new novelty and not the ubiquitous and indeed distracting form of communication essential to billions across the globe? And remember when thrillers were faced with a problem, that the characters could simply call for help rather than wait around to be menaced? They solved that by having the technology in the movies either not be able to get a signal, or be destroyed, often with a shot of the hero or heroine looking anguished in response, but here was a Larry Cohen screenplay (albeit worked on by other hands) that embraced that new-fangled contraption.
If all you wanted from your movie diversion was a silly story with plenty of action, a decent cast and a sense that they knew this was amusing for the wrong reasons, but what the heck, they were going ahead with it anyway, then this was happy to provide those thrills and spills and indeed chuckles. The chap Jessica (not the impressionist and comedienne, as quickly becomes apparent) manages to get through to is Ryan, a beach bum played by Chris Evans in his first big role before breaking out in Fantastic Four the following year (this one did not do huge amounts for his career). He has just bought a new cell phone and he can take pictures on it! It really is amazing what they can do these days (or in those days of 2004). However, when he twigs this strange woman who has called him up out of the blue is in danger, he turns heroic.