The screenplay for Hideo Nakata's Sadako was written by Noriaki Sugihara, based on the novel Tide (Taido) by Kôji Suzuki. The movie stars Elaiza Ikeda, Takashi Tsukamoto, Hiroya Shimizu, Himeka Himejima, Ren Kiriyama, and Rie Tomosaka. Here's a synopsis for it from Kadokawa International Sales (Kadokawa Corporation / K.K. Kadokawa): "Mayu works as a psychological counselor at a hospital. One day, she is counseling a young girl who is unable to do anything other than say her own name, when unusual things gradually begin to occur around her..."