The tender, sympathetic, and desperate performances are what make _Knock at the Cabin_ worthwhile. The psychological and horror aspects of the film are timid at best with the true identities of Leonard and his associates being obvious, gruesome elements that you never see, and an apocalypse that is a lackluster disaster overall. It’s not that _Knock at the Cabin_ is entirely bad, it’s that it seems to actively know it could be more creative, thrilling, and shocking and yet purposely chooses to bury its head in the sand and let mediocrity have its remorselessly bland way with it. **Full r...