The Weight of Water (2000)

A newspaper photographer, Jean, researches the lurid and sensational axe murder of two women in 1873 as an editorial tie-in with a brutal modern double murder. She discovers a cache of papers that appear to give an account of the murders by an eyewitness. The plot weaves between the narrative of the eyewitness and Jean's private struggle with jealousies and suspicions as her marriage teeters.