Thoroughly unsettling.

Survival horror has rarely been approached so sparingly and yet, for all there is to admire... the initial sense of potential suspense gives way to the creeping contempt of familiarity.

Starting as a coldly realistic thriller, this film eventually loses its bearings as the director Miguel ngel Vivas succumbs to a fit of nihilism, transforming "Kidnapped" into gruesome tit-for-tat torture porn.

The story may not be new, but Vivas executes and escalates events with such style and technical smarts, and inserts such extreme twists and unexpected turns, you will be left gasping for breath by the gruelling end.