Sounds like something out of a japanese horror movie, except it turns out that the nurse died 5 years ago and haunts the hospital

A former assistant nurse was sentenced Monday to three years and eight months in prison by the Kyoto District Court for tearing off the nails of six female patients.

Akemi Sato, 32, who worked at Jujo Hospital in Minami Ward, Kyoto, removed the fingernails and toenails of the six patients between September and October 2004, to relieve the stress she felt from the work imposed on her by her supervisors, according to the Kyoto District Court.

"The acts were cruel and relentless," presiding Judge Ryuichi Higashio said.