Catherine Tornquist was last seen in Hot Springs, South Dakota between 6:00 and 7:00 a.m. on October 5, 2011. She was carrying $10,000 in cash to buy a motor home and had already placed a $1,000 down payment, but never showed up for the purchase and has not been heard from since. The contents of her purse were found dumped on a gravel road northeast of Buffalo Gap.

Evidence introduced at trial of Catherine’s son, Matthew Charles Tornquist, included traces of her blood on the bed and a trail of blood leading outside, two spent bullets in the mattress and another in Matthew’s car trunk with hair consistent with Catherine’s, a bloodstained sheet of plywood on the property, a partially burned cell phone in a burn barrel, skin cells matching Catherine’s on a recovered .22 caliber rifle, and her blood on a pair of his jeans. Matthew provided multiple inconsistent stories and a false alibi; the jury convicted him of murder and grand theft and he was sentenced to life without parole. Catherine’s body has never been found, and foul play is suspected.

Does anyone have information about Catherine’s movements in Hot Springs on October 5, 2011, or about the gravel road northeast of Buffalo Gap where her purse contents were located?