Masked Ward (2020)
Original title: 仮面病棟
Masked Ward is a 2020 Japanese-language crime movie directed by Hisashi Kimura, with a running time of 1h 54m. It stars Kentaro Sakaguchi, Mei Nagano and Rio Uchida.
On-call substitute doctor Shugo suddenly finds himself faced with a terrifying criminal in a clown mask. The assailant demands that Shugo treat injured high school student Hitomi. The perpetrator sets siege to the building and Shugo finds himself confined with 64 unknown patients.