The Staudte Family
Diane Staudte
- Born April 5, 1962 to parents Carl and Estelle Richter in Springfield, MO
- Associate degree in Nursing from St. John’s College in KS in ‘85 (1)
- Married Mark Staudte December 28, 1985
- Bachelor’s degree in Nursing from Southwestern College in KS in ‘86
- Has been listed as a noteworthy medical-surgical, cardiac nurse by Marquis Who’s Who
- Was an organist for her church

Diane Staudte https://podcastaddict.com/episode/115632956
Mark Alan Staudte
- Born April 7, 1951 to Henry and Dorothy Staudte in St. Louis, MO
- Graduated from St. Johns college in KS
- Where he met Diane
- Loved to play music
- Lead singer and guitarist of local blues band Messing With Destiny
- Didn’t have 9-5 but would bartend and do odd jobs to make money

Mark Alan Staudte https://www.news-leader.com/story/news/2022/02/25/diane-staudte-springfield-woman-who-killed-husband-son-antifreeze-abc-20-20-friday-prison-interview/6926027001/
The Staudte Family
Diane and Mark had 4 children
- Shaun (26)
- On the autism spectrum and lived at home
- Sarah (24)
- Graduated college and had great grades, still lived at home and refused/couldn’t get a job despite lots of student loan debt (1)
- Rachel (22)
- Played the flute
- The favorite – she was always the one posted on social media and praised
- Brianna (9 or 12) (2)
- Was in 4th grade and had learning disabilities
- Diane was the primary breadwinner
- Mark didn’t bring in much money from the band, but would sometimes work odd jobs
- The whole family was musically inclined
- Enjoyed religious themed contemporary music

The Staudte Family. https://people.com/crime/antifreeze-murders-missouri-mom-daughter-pastor-tip/
Easter Sunday, April 8, 2012
The ‘Bad Luck’ Begins
Diane came home from church and found Mark dead in his bed. She immediately called police and it was determined that he had died of natural causes.
Natural Causes?
- The medical examiner didn’t find anything that indicated foul play or a struggle
- There was a ring of dried blood around his mouth
- Diane said he had been feeling weak for the last few days
- Eating less
- Sleeping more than usual
- Seizures
- He had no history of seizures, but Diane said he’d had multiple that day
- She didn’t call 911 for the seizures because he told her he didn’t want to deal with a doctor
- His bandmates also said he had seemed off that weekend
- Also said he looked yellow (1)
- He didn’t live a very healthy lifestyle, so the medical examiner declared his death as natural causes

Sarah Staudte. https://thecinemaholic.com/where-is-sarah-staudte-now/
Mark’s Memorial Service and What’s Next for the Family
- Diane arranged a memorial service for him
- He was cremated
- His band played one of his favorite songs
- They said it was strange that she was acting more like a party host than a grieving widow
- Chalked it up to everyone grieving differently
- Diane received his $20,000 life insurance policy money
- She moved the family to a nicer part of town and into a larger house
- They started to work on healing from the loss and moving forward

Shaun Staudte. https://abcnews.go.com/US/mom-daughter-describe-killing-family-members-anti-freeze/story?id=38029438
“There was nothing in me that believed that it was of a natural cause. I didn’t believe that he died of a stroke. A heart attack. Or in his sleep. I just didn’t. There’s nothing scientific. There’s nothing professional about my observation. But my first words were ‘no way.’ He did not just die.” –Jeff Sippy, who was then the pastor at Redeemer Lutheran Church, the family’s church, said he immediately felt like something was wrong.

Rachel Staudte. https://abcnews.go.com/US/mom-daughter-describe-killing-family-members-anti-freeze/story?id=38029438
September 2, 2012
Shaun is next
- Diane came home to find Shaun dead on the floor
- He had been suffering from flu-like symptoms for three weeks
- Diarrhea, nausea, body-aches, headaches
- Like Mark, he hadn’t wanted to see a doctor
Also Natural Causes?
- A routine autopsy was performed
- He had a ring of dried blood around his mouth
- No signs of foul play or a struggle
- It was determined he died of pre-existing medical conditions – including a history of a seizure disorder

Causes of Death pie chart. https://www.sciencedirect.com/topics/medicine-and-dentistry/natural-cause-of-death
June 2013
Tragedy strikes again
Diane showed up to the ER with Sarah who was seriously ill.
Tests showed her kidneys and other organs were failing and her brain was hemorrhaging.
Will She Meet the Same Fate?
- Doctors worked hard to figure out what was going on and they were able to stabilize her
- Her condition still wasn’t good, but at least she was stable
- She was in the hospital for weeks recovering
- She made it out, but not without severe, lasting neurological damage
- She had to relearn a lot of things even how to walk and talk
- Strangely, Diane hardly visited her daughter throughout her stay in the hospital
- Hospital staff also found it strange how she didn’t seem very upset over her condition
- she would joke and laugh with them and even stated that she wasn’t going to let her daughter’s condition get in the way of her vacation plans
….Suspicions are Rising….
Ok I know we’re all dying to know where this is going and might have some inclinations as to what is going on but I’m going to make you wait until next week because there’s still a lot to unpack and this was the spot that it made the most sense storywise to pause at so don’t hate me and we’ll be back soon
Sources: All Accessed August, 2023
Diane and Rachel Staudte: The Antifreeze Murderers https://delanirbartlette.medium.com/diane-and-rachel-staudte-the-antifreeze-murderers-5fcd62000f57
Mother convicted of poisoning her family maintains her innocence https://abcnews.go.com/US/mother-convicted-poisoning-family-maintains-innocence/story?id=82780856
How Diane and Rachel Staudte Killed Their Family with Antifreeze https://www.aetv.com/real-crime/antifreeze-murder
The Staudte Family Murders https://en.wikipedia.org/wiki/The_Staudte_Family_Murders
In Memory of Mark Alan Staudte https://memorials.hhlohmeyer.com/Staudte-Mark/1172546/obituary.php
Diane Elaine Stuadte https://prabook.com/web/diane_elaine.staudte/905699
Mom, Daughter Describe Killing Family Members With Anti-Freeze in Never-Before-Seen Interrogation Tapes https://abcnews.go.com/US/mom-daughter-describe-killing-family-members-anti-freeze/story?id=38029438
Diethylene glycol poisoning and liver function following accidental diethylene glycol injection https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4920036/#:~:text=This%20finding%20suggests%20that%20DEG,.%2C%201990%5B7%5D).
You must log in to post a comment.