Horror is such a productive genre, with so many prolific filmmakers, that it’s hard to keep up with the headline hits sometimes, let alone the hidden gems that don't get the fanfare they deserve. This is particularly true as the years pass and absolute stone-cold masterpieces recede into obscurity, soon to be undeservedly forgotten, written off and ignored by critics and fans alike.
This is even true of some of the best work by the most well-known directors working in the genre. John Carpenter, Wes Craven, David Cronenberg - they've all made under-appreciated slices of genius that have somehow slipped under the radar.
But it's not just horror directors. Some of the biggest names in film have made great works of horror that need a little more love than they've received.
Us horror fans love to find weird old oddities, though, and it's a good job we do - there's all sorts of amazing stuff out there that needs discovering. This list shines a light under the dirty rocks of horror history, finding out what's squirming down there.