Fantastic Fest 2025 – Initially, 13 Days of Summer doesn’t contain anything we haven’t seen before. The Polish film combines elements of both the slasher and home invasion subgenres, featuring a killer with a rather creepy mask, a face turned upside down. Yet, the film’s brutal and surprising ending will likely spark conversation. The feature has quite a polarizing last act.
Directed by Bartosz M. Kowalski, the film stars Teodor Koziar as Antek, a lonely high school student who’s bullied and still reeling from the fact his mom ditched the family and walked out, though there’s never a clear reason for this. Still, her departure’s impact is clear, at least upon Antek. Even worse, his older sister, the popular Paula (Katarzyna Galazka) isn’t exactly there for her younger bro. In fact, she makes disparaging comments towards him. It’s common for older siblings to sometimes tease, but Paula’s comments cut deep and worsen Antek’s sense of isolation.
Shortly into the film, Antek discovers a dead body in the woods, which follows a cold opening in which we see the silent killer murder a houseless person. Antek convinces himself the school janitor who butchered his family a year ago is responsible for the latest murder, especially since the janitor has been MIA since.
The film really picks up once Paula throws a party after her dad leaves town for a business trip. She invites over a number of her friends, including her hunky new boyfriend Piotrek. There is some tension when Paula’s ex, Magda (Olga Rayska), shows up, sulking and threatening to kill herself because both Paula and Piotrek left her, after she claims they promised her their undying love. This weird love triangle isn’t really explored enough in the film and feels unnecessary. The real fun begins once the killer traps everyone inside by breaking into the security system. One by one, the killer picks off Paula and her friends.
In terms of the deaths, nothing in this is all that gory. It’s pretty standard stuff. There’s no Terrifier-level gore here, and the home invasion tropes were done much better in films like The Strangers and Funny Games. Still, the movie is an enjoyable horror ride, with an eerie-looking killer. Then, the reveal happens and the shocking ending.
I have no doubt that the final few minutes of this film will polarize the audience and warrant discussion. It’s violent and harrowing, and I’m still on the fence as to whether or not it’s earned. Without spoiling anything, I also can’t tell if Kowalski was going for any kind of social statement here, like radicalized youth, especially young men, a theme that’s really prescient right now. It’s hard to say, but the ending will divide the audience. Of that, I have no doubt. The motivation also feels a bit too paper-thin to justify such a brutal eventual outcome.
Until its final minutes, 13 Days Till Summer is your standard slasher and home invasion affair. For a majority of the film, there’s not much we haven’t seen before. It’s the ending that audiences will remember. The film ramps up to a surprising and bleak conclusion.
