In the audiotaped interview, Hendricks doesn't cry much and her voice sounds flat, emotionless and tired much of the time. Most of the sobs come at the end of the questioning when she says she can't give a written statement and wants to go home.
"I'll have to help you another time, OK. I need to go. I need to see my family," Hendricks said. "I need to see somebody that I know. I haven't seen anybody I know. I don't know what's going on. I don't know where my kids' bodies are at. I need to get out of here, OK? Please?"
Detectives fanning out across Pickens County gathered dozens of statements detailing a fractious relationship between Hendricks, her sons and her ex-husband.
Mark Hendricks' sister, Rhonda "Suzy" Chappell, told deputies that Marshall lived with her for two months after his mother kicked him out, and that at his father's request, he had moved back two days before he was killed.
"This has been a very dysfunctional home for many years and she saw that the boys were working their way out and she was losing her grip," Chappell wrote in a statement to investigators.
Mark Hendricks' second ex-wife, Barbara Hendricks, told investigators Susan Hendricks followed the couple to Myrtle Beach and had told people she wanted to kill them.
An ex-boyfriend of Susan Hendricks, Rudy Parra, told deputies that Hendricks told him she had shot a man who came into her house uninvited in 2006. She then showed him three guns she kept in a safe in her closet.
In that same safe, detectives later found insurance policies for each victim, payable to Susan Hendricks and with a combined value of more than $680,000.
A Pickens County printing shop owner told detectives Hendricks came to his shop six days after the killings and asked him to notarize her changing the executor of her will from her sister to one of her brothers.
When she was arrested 10 days after the shooting, an officer noted numerous wills and financial documents on the floor.
Nine months after her arrest, Hendricks tried to commit suicide, according to a police report included in the cache of released documents. A female cellmate told authorities Hendricks squirreled away 40 pills she was given for her mental problems and tried to overdose. Hendricks left a note to her family telling them not to fight.
"I'll be okay with Mark and the boys," she wrote. "See ya another day."
During her plea hearing, a psychiatrist identified as David Price testified that she was abused by both of her parents, and that her parents also let others abuse her. Hendricks declined to speak at the hearing.
Price said Hendricks developed several personalities as a coping mechanism during the abuse. While the dominant one knew right from wrong, the one in charge the night of the killings didn't, he said.
Included in the crime scene photos are images of Hendricks' home, including her bedroom, which was clean and tidy and equipped with a disco ball that she said she used when she danced as part of a weight-loss program.
Other photos show the rest of the house in disarray.
And then there is image No. 84, a photo of a photo, tacked with a push pin next to a fly swatter, on a wall of what looks to be a kitchen.
It shows a smiling Hendricks in a dress standing next to her ex-husband in coat and tie, their two well-dressed sons flanking them on either side.