Heart, Beating in the Dark (闇打つ心臓 Yamiutsu shinzo) is a 2005 film directed by Japanese director Shunichi Nagasaki, partly a remake and partly a sequel to his 1982 film of the same name. The film has three threads running through it, and also includes footage from the 1982 original throughout: Cast members include: Noriko Eguchi (Yuki), Shoichi Honda (Toru), Kaori Mizushima (Ritsuko), Shigeru Muroi (Inako), Takashi Naitō (Ringo) and Taro Suwa (Shimamoto).