Ronald Haskell disguised himself as a FedEx delivery man before executing the four children and their parents, prosecutors said, bolstering their argument that he was not insane, but seeking revenge.
Police say they were able to track down the mother who they say gave her son to a random woman, though there's been no announcement regarding possible criminal charges.
Robert Sparks stabbed his wife Chare Agnew to death before taking his young stepsons Harold Sublet, 9, and Raekwon Agnew, 10, into the kitchen and stabbing them as well. Then he attacked his two stepdaughters.
Police claim Paula Bergold eventually admitted her mother's body was in a plastic storage bin in the basement after authorities noticed a smell of decay in the home.
"What you did was so abhorrent and vile that you must spend the rest of your life in prison,” a judge told Alexander Whipple, who pleaded guilty in the grotesque death of Elizabeth "Lizzy" Shelley.
Yisenya Flores initially told authorities her grandson had gotten injured from falling off a box spring bed, but she later allegedly admitting to striking the boy so hard he was having trouble getting up off the floor.