The Bridgewater Murders (2012)

Isabelle Bridgewater was a beautiful, warm, and caring woman in a loving marriage. Until a moment of jealousy turned into a brutal act of rage. When she discovers that her husband, John, is having an affair with her best friend, Isabelle goes on a blood soaked rampage of hate. Gayle Fleming must unlock the secrets behind Isabelle's madness before she kills again.