"Something had to be done," Michaels told ABCNews.com. "The main reason this was done was Linda Fisher believed Jason killed Michelle."
Included as evidence in Fisher's lawsuit was an affidavit from Wake County Sheriff's Office investigator R.C. Spivey III, who also testified in court that Michelle Young's beating was among the worst he'd ever seen.
Spivey wrote in the affidavit: "I am familiar with other items of fact developed during this investigation that have not been placed in the public record to support a search warrant and, in my opinion, this evidence ... indicates that Jason Young was the perpetrator."
During the civil court trial, Meredith Fisher, who went about a year without seeing Cassidy, described how the little girl asked her, "How did my mommy used to hold me?"
"I just grabbed her real tight and told her that her mom loved her so much and that she would squeeze her and hug her like this every chance she could," Meredith Fisher said through tears.
'Anatomy of a Knockout'
Search warrants and affidavits in the case detail damning circumstantial evidence against Jason Young, including alleged extramarital affairs and a bottle of extra-strength adult Tylenol police believe was given to Cassidy to make her drowsy during her mother's murder.
Police also noticed an adult print that they said was from a size 12 Hush Puppies Orbital shoe, which was left in the bloodstains. Police later found through store records that Jason Young had purchased a pair of size 12 Hush Puppies Orbital shoes more than a year before his wife's death, according to investigators' reports.
Records seized from Jason Young's computer turned up search queries on "anatomy of a knockout," "head trauma knockout," "divorce" and "gay bars in New York City," according to police affidavits.
There were also searches for "right posterior parietal occipital region" -- the occipital region is in the back of the head -- and "ischemia," the decrease in the blood supply to parts of the body caused by constriction or obstruction of blood vessels, according to the affidavit.
According to police affidavits dated Feb. 13, 2008 and Nov. 6, 2008, Jason Young checked into a Hampton Inn in Virginia the night before his wife's body was found, and he had allegedly been having an affair. He was seen on hotel security cameras the night before his wife's body was discovered wearing two different sets of clothing within a few hours, authorities said.