After a several-year hiatus, John Kramer, a/k/a the Jigsaw Killer, is back. Or is he?

After a several-year hiatus, John Kramer, a/k/a the Jigsaw Killer, is back. Or is he?
The intensely bleak and extremely dark “Into the Forest” is a feminist-tinged apocalyptic tale of sisterly love and devotion taken to the extreme.