Diane Staudte and her daughter, Rachel, committed murders together by poisoning their family members with antifreeze.  Diane's husband, Mark was murdered first, then her son, Shaun.  Soon after, her daughter, Sarah was taken to the hospital in critical condition and police started an investigation.  Diane was sentenced to life in prison without the possibility of parole and Rachel was sentenced to life in prison and she will not be eligible for parole for 42 1/2 years.

Website: Drinking The Cool Aid

Resources:

• Additional Laboratory Requests – Medical Examiner-Coroner (lacounty.gov)
• Stream Female Judas (Mark Staudte and Messing With Destiny) by Messing With Destiny Productions | Listen online for free on SoundCloud
• Who is Diane Staudte and where is she now? (the-sun.com)
• Mother convicted of poisoning her family maintains her innocence - ABC News (go.com)
• Diane and Rachel Staudte: The Antifreeze Murderers | by DeLani R. Bartlette | Medium
• Watched: 20/20 Season 44, episode 15 Home Sweet Murder