Two high school students are found dead, stoking fears amongst the student body and surrounding community of a serial killer on the loose. Yet summer is approaching, and the future is fraught with uncertainty - if only things could go back to normal for just a while longer. Instead, the heightened police presence cockblocks Pola from dealing at school while her best friend, the typically discreet Daniel, resists increasingly morbid impulses. News crews speculate about the Bloody Batter, triggering PTSD and fueling paranoia. Meanwhile, evil has its own plans. Slash Them All is cartoonist Antoine Maillard's tribute to 1980s American horror cinema, skillfully absorbing the traditions and tropes of the genre, yet drawn in a gorgeous, grayscale pencil style that evokes 1950s film noir more than Jason or Freddy Kreuger.