Headcase is a Canadian short satirical comedy horror film, directed by Spencer Zimmerman and released in 2025. The film stars Siobhan Connors as Karen, an online influencer who kills Brad (Pat Moonie) with her car while filming content, and decides to take advantage of his severed head in a bid to go viral and secure her fame.
The film premiered at the 29th Fantasia International Film Festival on July 26, 2025, as the opener to Kurtis David Harder's feature film Influencers. It was created as part of the 2025 Crazy8s film competition, which challenges six filmmakers to produce a short film over eight days.
A feature expansion of the film is in development.