El Perverso Asesino del Metro is a 2025 Mexican crime thriller in which Alan, a determined detective, detains a suspect during a routine investigation and slowly begins piecing together evidence that convinces him this is the serial killer terrorizing the metro — a methodical and dangerous predator who has been attacking victims in Mexico City's underground transit system, setting off a tense cat-and-mouse pursuit as Alan races to build an airtight case before the killer strikes again.