Murkwood (2017) online

Career criminals Peter Buck, Eddie Coyne and Lucien Thaler kidnap the son of a prominent British politician from a Swiss boarding school. Hiding out in the Alps, the men wait for the ransom money. But when tragedy strikes, they end up trapped in a dark wood - held hostage by unseen forces. Hunted and desperate, the kidnappers realize that the worst evil does not lurk in the shadows of the night but in the darkness of their souls. And it is about to be unleashed... Written by a.b