Lowell Amos

Amos died in prison on January 5, 2022, a day after his 79th birthday.

On October 24, 1996, Lowell was convicted of premeditated murder and murder using a toxic substance (considered separate charges of first-degree murder), and on November 4, 1996, was sentenced to life imprisonment without the possibility of parole. He was held in security level II at the Lakeland Correctional Facility in Michigan. Charges were never made in the cases of the other three deaths. In 1998, Lowell's appeal was rejected.

In December 1994, Lowell and Roberta Amos attended a company executive party at the Atheneum Hotel in Detroit. The Amoses went to their suite at 4:30 am. Four hours later, Lowell called Bert Crabtree, another executive from the party, and seemed to be in a panic. Crabtree and another hotel guest named Daniel Porcasi went to the room, and Lowell told them that Roberta had died in an accident. Lowell said he needed to clean up before calling police, and he asked Porcasi to take his sport coat for him. Porcasi, while driving home that morning, looked inside the breast pocket of the coat, and found a small black leather case with a syringe without a needle, and a foul-smelling washcloth inside. Amos later reclaimed the coat, and its contents disappeared.

Lowell was arrested for the murder of his third wife. Due to a 1994 change in Michigan law, the prosecution was allowed to enter details of previous incidents into the trials. Prosecutors also argued that although Lowell lacked a financial motive for killing Roberta, as he had for the other three deaths, his marriage was about to end. Roberta had already bought a house of her own, and had told friends and family that she wanted Lowell out of her life.

Shortly after Saundra's death, Lowell married Carolyn. According to friends, Lowell and Carolyn argued frequently over the large insurance policies Lowell had bought on her life, and since he would not cancel the policies, she threw him out in 1988.

Investigators found out that Lowell's first wife Saundra died under suspicious circumstances at age 36, in 1979. Saundra was found dead in her bathroom. Lowell's statement to police at that time was that Saundra had mixed wine with a sedative, collapsed, and hit her head. The cause of death was ruled indeterminate, and Amos received a $350,000 insurance payout.

Lowell Edwin Amos (January 4, 1943 – January 5, 2022) was an American convicted murderer whose mother and three wives all died under suspicious circumstances. He was convicted in 1996 of murdering his third wife, Roberta Mowery Amos, and was the subject of a 2006 Lifetime Network made-for-TV movie called Black Widower. Amos was a former General Motors plant manager. Some sources spell his first name as "Lowel".