In April 2005, Tuscon Arizona a couple was found brutally murdered in their own home by their grandson. The story doesn't end there as another man was found bludgeoned to death by the same man in April 2021, in Gilbert Arizona. This is the story of Carl and Patricia Gremmler. As well as Steven Howell

Sources:

http://tucsoncitizen.com/morgue2/2009/05/13/172068-mom-mental-care-let-down-her-killer-son/

https://tucson.com/news/local/crime/life-sentences-to-be-served-in-mental-hospital/article_03482724-81ef-5eb4-a9a4-4316f92bebd7.html

https://www.newspapers.com/image/?clipping_id=75983375&fcfToken=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJmcmVlLXZpZXctaWQiOjU4MDIxMDE5MSwiaWF0IjoxNjQ2MTc4Njg4LCJleHAiOjE2NDYyNjUwODh9.cYvx89YWMzxGysame-Sq7hY-MjTEYUwZrsdow62_jMY

https://www.tucsonlocalmedia.com/import/article_69707d43-ec21-5d15-9772-057913e4e657.html

https://amp.azcentral.com/amp/7212537002

https://www.12news.com/amp/article/news/crime/suspect-in-gilbert-group-home-murder-was-supposed-to-move-out-the-morning-of-the-murder-according-to-police-records/75-24572b10-1162-4afb-9634-b8c8197c78a7

https://www.kvoa.com/news/n4t-investigators-why-insane-tucson-murderer-was-released-to-group-home-accused-of-killing-roommate/article_ad812e6c-40e4-11ec-9f8d-97c92665999a.html

http://tucsoncitizen.com/morgue2/2009/05/14/44321-uncle-killer-son-had-knives-confiscated/

https://www.kold.com/story/3201758/double-murder-in-rillito/

https://www.12news.com/amp/article/news/investigations/family-files-lawsuit-against-tilda-manor-after-group-home-murder/75-826dd1a2-5cb5-4e16-bbad-696f23cc39e6

https://www.legacy.com/us/obituaries/azcentral/name/steven-howells-obituary?id=6682177