On October 31st, 1984, Doreen Erbert would return home from taking her 4-year-old daughter Trick or Treating. Her husband Charles would head out to a liquor and shortly after he left, there would be a knock on the door. Doreen would answer the door expecting more Trick or Treaters, but little did she know that whoever was on the other side of the door had ulterior motives. 

Sources: 

Smith, Benjamin, “Man In Wolf Mask Hacks Pregnant Ex-Wife To Death With Machete On Halloween Night’, Oxygen True Crime, October 27th 2019, https://www.oxygen.com/snapped/crime-news/michael-dennis-kills-ex-wife-doreen-erbert-wolf-mask-halloween, Accessed October 26th, 2025 

Vanapalli, Viswa, “Doreen Erbert Murder: Where is Mike Dennis Now?” The Cinemaholic, October 30, 2021, https://thecinemaholic.com/doreen-erbert-murder-where-is-mike-dennis-now/, Accessed October 26th, 2025  

Vanapalli, Viswa, “Where Are Deanna and Charles Erbert Now?”, The Cinemaholic, October 30, 2021, https://thecinemaholic.com/where-are-deanna-and-charles-erbert-now/, Accessed October 26th, 2025 

Sederstrom, Jill, “Pregnant Mom Killed With Machete After Answering Door on Halloween Night”, Oxygen True Crime, October 17th, 2023, https://www.oxygen.com/homicide-for-the-holidays/crime-news/doreen-ebert-murder-daughter-william-michael-dennis-san-jose, Accessed October 26th, 2025 

“Doreen Erbert: A Halloween Slaying in San Jose” National Crime Scene Cleanup, September 18, 2023, https://www.crimescenecleanup.com/doreen-erberts-murder/, Accessed October 26th, 2025