PORTLAND, Maine — Maine’s highest court has upheld the convictions of a brother and sister who appealed their convictions for killing the woman’s husband in his Old Orchard Beach home and trying to make it look like he was the victim of a home invasion.

Darlene George is serving 40 years and her brother, Jeffrey Williams of West Hempstead, N.Y., is serving a life sentence after the two were tried together in the 2008 death of George’s husband, Winston George.

In separate unanimous rulings, the Maine Supreme Judicial Court on Thursday rejected their arguments that they should have had separate trials.

According to court documents, Winston George was suffocated with a plastic bag and then had rum poured down his throat to confirm he was dead.