This feels like a very definite effort to tackle the themes of the film The Cabin In The Woods, from the title to the setting to the story, but whereas that engaged with a whole load of filmic horror tropes that didn't leave the reader in much doubt about what was going on, this takes a more subtle approach. When the four strangers appear outside the holiday cabin of the two husbands and their adopted daughter carrying their nasty-looking weapons, I was a bit concerned that this was going to turn into torture-porn. Luckily we get a harrowing and suspenseful game of psychological and existential terror that gradually slips into bouts of brutalising violence. Haunting, twisted and ugly, yet satisfying with strong writing and characterisation.