The state Supreme Court has upheld the conviction and death sentence of a man involved in one of the Kansas City area’s most sensational recent murder cases.

Richard Davis was convicted of murdering a woman he and his girlfriend, Dena Riley, had sexually abused and killed. Jurors saw a videotape that showed Davis and Riley suffocating Independence resident Marsha Spicer.

All seven judges agree the trial court made none of the mistakes Davis claims it made. The court split on two other points in the case but upheld the trial court’s decision on each issue.

Riley, the girlfriend, is in prison for life without parole.