When a panicked husband calls 911 for help saying his wife has overdosed the first officer on the scene notices some pretty big red flags.

How a Young Mother’s Journal Helped Convict Cheating Husband of Her Murder

The forensics tell the story of what killed Maria Munoz, but Joseph Scott Morgan and Dave Mack will dig deeper to find out what really happened to a Texas mom with a penchant for writing in her journal, about everything.

[Feature Photo: Maria Eugenia Muñoz/ Family Handout via CBS News]