In January 1996, Lee and Kehoe left the state of Washington and traveled to Arkansas. On January 11, 1996, they arrived at the home of William Frederick Mueller, a gun dealer who lived near Tilly, Arkansas, and who possessed a large collection of weapons, ammunition, and cash. Kehoe and his father had robbed Mueller in February 1995, and Kehoe expected to find valuable property at the house. Dressed in police raid clothing, the two men tried to enter the Mueller home, but the family was not at home. When the Muellers returned, Lee and Kehoe overpowered and incapacitated Mueller and his wife, Nancy Ann Mueller (née Branch). They then questioned Nancy Mueller's 8-year-old daughter, Sarah Elizabeth Powell, about where they could find the cash, guns, and ammunition. After finding $50,000 in cash and gold (equivalent to $81,509 in 2019), and $30,000 worth of firearms and firearm parts, they shot each of the three victims with a stun gun. They then placed plastic bags over their heads, and sealed the bags with duct tape, suffocating them to death. They took the victims in Kehoe's vehicle to the Illinois Bayou, where they taped rocks to them and threw each family member into the swamp. For his part in the crime, Lee received $3,000 or $4,000 and a pistol. The bodies were discovered in Lake Dardanelle near Russellville, Arkansas, in late June 1996.