On June 23, 1965, police were called to a home in the Montrose area of Houston.  They thought it was a routine welfare check requested by the nephew of an elderly couple.  The nephew said that he hadn't been able to get in touch with his aunt for several days and he was concerned about her and his uncle.  When police arrived, it seemed like nothing was wrong. However, when police entered the house, they would be shocked at what they found in the couple's refrigerator.

Sources:

https://allthatsinteresting.com/ice-box-murders

https://www.houstoniamag.com/news-and-city-life/2018/11/icebox-murders

https://alonewithnature.medium.com/ice-box-murder-case-23f7cb76ed7

htttps://the-line-up.com/ice-box-murders

https://www.thescarechamber.com/icebox-murders/

https://www.mentalfloss.com/article/602369/ice-box-murders-houston

https;//www.chron.com/news/houston-texas/houston/article/Grisly-Ice-Box-Murders-7251178.php

The Ice Box Murders: Based on a True Story by Hugh and Martha Gardenier