The story of an all-female caving expedition gone horribly wrong, The Descent (2005) is arguably the best of the mid-2000s horror entries to return verve and intensity to the genre. Unlike its peers (Saw 2004], Hostel 2011], etc.), The Descent was both commercially and critically popular, providing a genuine version of what other films could only produce as pastiche. For Mark Kermode, writing in the Observer, it was "one of the best British horror...