Tighten up Sebastian Fitzek and Susanne Schneider’s screenplay and excise the peen-hammer-to-skull overexplanatory subplotty flashbacks, and the movie might be a tight, minimalist thriller that implies things instead of stating them outright.

The Calendar Killer is not just a serial killer thriller but a haunting exploration of personal torment and domestic abuse interwoven within a suspenseful narrative.

The Calendar Killer has the oddest yet most realistic depiction of a vigilante.

"The Calendar Killer" was a letdown. From the start, the movie felt like it was rushing through its setup, skipping a proper first act and diving straight into a predictable storyline. There was no real depth to the plot, making it easy to see where things were heading without any surprises. The third act lacked any real impact, leaving the film feeling incomplete. While there were some decent cinematography moments, they weren’t enough to save the experience. The acting felt forced and unconvincing, making it hard to connect with any of the characters. Overall, it’s a forgettable thriller that doesn’t do much to stand out. It had potential but missed the mark by relying on a generic structure and failing to build tension. If it had taken more time to develop its characters and create a proper buildup, it might have been more engaging. Instead, it feels like a rushed project with decent visuals but nothing memorable beyond that.