Deathwatch

In the middle of World War I, nine British soldiers caught behind enemy lines seek refuge in a complex network of German trenches. What they soon discover is that they aren't alone - and it isn't a German soldier that's hunting them down.

Deathwatch is a 2002 drama horror movie directed by MJ Bassett, starring Jamie Bell, Rúaidhrí Conroy, Mike Downey. It holds an IMDb rating of 5.9/10 from 12,929 votes and runs 1h 34m.