Murder, She Wrote S04E05 - The Way to Dusty Death

When Jessica and several other members of a company board are invited to the chairman's country estate, everyone is considered a suspect when their host is found murdered. When the police discover that everyone only arrived to find out who will the victim planned on naming the next chairman, only to be betrayed by him, they turn to Jessica for help in trying to find out which jilted board member wanted power bad enough to kill for it.