Fatal Vows S01 E04 The Last Seduction

"Love may be blind and marriage, bliss - but divorce is murder."

Soon after John Pitman and Tracey Richter are married, John fears for his life. The family pets disappear, Tracey pulls a gun, and a private eye claims that Tracey is out to get him. But a neighbor ends up dead and Tracey says that John is behind it all.