The Spiral (1998) on Netflix

Plot summary

Mitsuo Andō is a pathologist. The body of his friend and rival Ryūji Takayama arrives for examination, and Andō finds a cryptic note inside the stomach. Takayama's former wife Reiko Asakawa and their son Yōichi die soon after, and Andō hears talk of a videotape that is said to have caused their deaths and to kill everyone who watches it one week later. Grieving the death of his own child, Andō watches the tape himself, and odd things begin to occur around him. Takayama's student, Mai Takano, joins him as he investigates the past of Ryūji and a young woman named Sadako Yamamura, whose spirit is tied to the tape.