The Barber (2014)

Eugene van Wingert (Scott Green Scott Glenn), an unremarkable-looking old man in a small American town, is sitting in a restaurant drinking coffee when he is keenly aware of a young man staring at him. Francis tried to leave quietly, only to be attacked by young people outside. The young man, who calls himself John (Chris Coy Chris Coy), points out that Francis is the serial killer Francis Allen Visser suspected of killing 17 young women 20 years ago and eventually acquitted for lack of evidence. John claims to be an avid fan of Francis and hopes to learn the skills under the old man's door. The crazy young man did not hesitate to kill a young woman as his application certificate, and for the sake of his own fanaticism, Francis agreed to bring John into the door. It's just that beneath John's unruly appearance, there seems to be some unknown secret.