Charles and Sherry Best stopped for bacon milkshakes after dropping off their dead sister-in-law’s body after she overdosed on heroin,

Charles and Sherry Best stopped for bacon milkshakes after dropping off their dead sister-in-law’s body after she overdosed on heroin, prosecutors said Friday.

The Bests remained in the Lake County Jail on Friday after Associate Judge Raymond Collins ordered them held on $1 million bond. Both are charged with concealing a homicide in the death of Round Lake Park resident Melissa Best, while Sherry Best faces an additional charge of drug-induced homicide.

Melissa Best was last seen alive on April 15, and her body was found in a Grayslake parking lot 10 days later. Round Lake Park police said that Sherry Best, her sister-in-law, provided heroin that Melissa Best injected into herself during a visit to the couple’s room at an extended-stay hotel in Waukegan.

Melissa Best fell unconscious almost immediately, and Sherry Best, who police say had also injected herself with heroin, made no attempt to assist her, authorities said.

Police said Charles Best, the brother and co-worker of Melissa’s husband, Clinton, arrived home a short time later and was unable to resuscitate her.

Later that same day, the couple carried Melissa Best’s body to her minivan and drove it to Grayslake, police said. They chose that location to leave her body because Charles Best once dated a woman who lived in the complex, Lake County prosecutor Steve Scheller said.

After dumping her body, they stopped on the way back to Waukegan for the milkshakes at a Denney’s restaurant, Scheller said.

A toxicology report later determined that Melissa Best died of morphine intoxication.

Sherry Best will be represented by the Lake County public defender’s office, and will next appear in court on June 8. Charles Best’s next court appearance is slated for Tuesday.