It's raining hard outside; snow might start to fall. Winter has arrived, but it's been so cold for so long now.

Two women are dead, and the killer is at large. Jo and Henry have another tough case on their hands. But when Henry finds some eerie similarities between this case and others he has seen, something shifts. No longer is his main focus simply to solve the case; now, Henry is determined to keep Jo safe. Whatever the costs may be.