We love to sleep so much that we spend half our lives doing it. But as anyone knows, who has woken up with a crudely-drawn Hitler moustache or a face full of shaving foam, we're at our most vulnerable when we're catching the Zzzz's. Spanish director Jaume Balagueró's latest film is an examination of what can happen whilst we sleep.

César (Luis Tosar) works as a concierge in a residential building. His main concern is to make sure that the building is maintained and looked after. Where he gets his job satisfaction from however, is making the lives of the tenants as miserable as possible.

There is one tenant, Clara (Marta Etura), who really gets his goat; try as he might to ruin her day, she always appears to leave the building with a smile on her face. Although initially deflated, his failure only spurs him on more to make her life a living hell. And he does have a great advantage over her; as a concierge he has a key to every flat in the building, including hers. So in the dead of night, whilst everyone sleeps, César sneaks into her bedroom and puts his dastardly plans in motion.

My head says the red and green shouldn't work, but my heart loves it!

After the highly claustrophobic feel of his last two films (REC and its sequel) being set in an apartment building, Balagueró continues with this restrictive theme with his latest offering. And although having all the action contained within the building certainly helps with atmosphere, the lameness of the story, and more specifically its execution, does not.

Although the premise of having someone under your bed whilst you sleep is unnerving, César is nothing more than the Grinch that stole sleeping, and just as terrifying. It would have certainly worked better as a comedy, with César wanting to get rid of his tenants in a very cartoonish, Home Alone kind of way, but lacks any kind of threat as a horror.

The main character César is nothing more than a Spanish version of Basil Fawlty at times, but without a Manuel to get in his way. And his motivation of not ever knowing what it's like to be happy just doesn't cut it.

Considering how inventive and creative his REC films were, this effort is a bitter disappointment. It lacks thrills, tension and any kind of imagination. Let's hope that Balagueró manages to wake up from this creative lull and smell the beicon in time for his next project.