Cindy Watts son strangled his pregnant wife to death, and suffocated his two toddler daughters. He then buried his dead wife in a shallow grave, and shoved his two dead daughters into separate oil vats where their skin would start to separate from their bones before LE could even retrieve them later. More @Wikipedia
Hover over any link to get a description of the article. Please note that search keywords are sometimes hidden within the full article and don't appear in the description or title.