Andrea Yates was a woman who suffered from mental illness throughout her adult life. Her religious mentor exacerbating her condition through his preaching. She married and the couple had five children together, but as the numbers increased, her mental health diminished. Committing several self-harm events, speaking of hearing voices and wanting to hurt her children but trying to end her own life instead. In the end, all the interventions aren't enough to save her five children. She is unattended for 60 minutes and in that time, ends the life of all of her children before calling for help. 

Sources:

Crimes of the Century: Season 1, Episode 3. Andrea Yates

https://www.ebsco.com/research-starters/biography/andrea-yates

https://people.com/andrea-yates-lawyer-flowers-children-grave-exclusive-11691942

https://ir.lawnet.fordham.edu/faculty_scholarship/104/

https://www.oprah.com/omagazine/andrea-yates-a-cry-in-the-dark/all

https://www.cnn.com/2007/US/law/12/11/court.archive.yates8/index.html

https://engagedscholarship.csuohio.edu/cgi/viewcontent.cgi?article=1174&context=clevstlrev

https://deathpenaltyinfo.org/new-voices-prosecutor-now-says-killings-by-andrea-yates-were-preventable

https://culteducation.com/group/1234-michael-woroniecki/22286-a-mysterious-preacher-and-the-childrens-killer.html

https://apologeticsindex.org/news2/an020124-08.html

https://facts.net/fitness-and-wellbeing/health-science/40-facts-about-tardive-psychosis/

https://www.mind.org.uk/information-support/drugs-and-treatments/antipsychotics/side-effects/#TardivePsychosis