Fermat's Room

We finally caught Luis Piedrahita and Rodrigo Sopena's brilliant mathematical thriller, Fermat's Room (La habitación de Fermat) at the weekend. A taut clever thriller, it brings four maths geniuses together ostensibly to solve a complex enigma, but in reality to subject them to a terrifying ordeal. Hercule Poirot may not be amongst them, but there are enough false trails to energise the little grey cells, all served up with the chilling horror of a room that has no obvious exit but is gradually reducing in size, and will crush them if they don't solve a series of problems. This is an excellent debut by the Spanish directors, and if it is still around where you are, don't miss it. It may be the most gripping 90 minutes you experience all year.