[5] On February 21, 1987, Greenwell sexually assaulted and shot 41-year-old Vicki Lucille Heath,[3] at the Super 8 Motel in Elizabethtown, Kentucky.

24-year-old Margaret Mary "Peggy" Gill,[9] a night auditor at the Merrillville, Indiana Days Inn, was sexually assaulted and shot twice in the head, and her body was dumped in a back hallway.

Four hours later,[8] Greenwell sexually assaulted and shot 34-year-old Jeanne Gilbert,[9] a part-time auditor at the Remington, Indiana Days Inn.

The victim, who survived the attack, was working the night shift when Greenwell sexually assaulted, stabbed, and robbed her.

She survived and gave a similar description of the assailant, noting his flannel shirt and jeans, as well as bearing a lazy eye.

[10] In 2010, the Kentucky State Police announced that DNA evidence linked the three murders and they were officially dealing with a serial killer.

[7] DNA also linked him to at least four cases in several states where female motel clerks working along the I-65 were sexually assaulted and robbed.

[12] While Greenwell was not identified as the perpetrator of the assaults and murders until 2022, he was arrested in 1989 for a traffic violation and a domestic incident in La Crosse, Wisconsin.

He also indulged in a variety of hobbies, ranging from organic gardening, frequenting the farmers' market where he sold his produce, traveling, reading, wordsmithing, and held great interest in college sports and horse racing.