Mark Yeager is retired from his stressful career as an entrepreneur and now gets his adrenaline fix from games of platform tennis with a motley crew of equally middle-aged buddies. But when one of his good friends is bludgeoned to death in the dark on one of the platform tennis courts, Mark takes it personally: Manny Grimes had likely saved Mark's life by insisting he see a doctor for what turned out to be prostate cancer. Mark decide she must identify the killer, even if it means another close encounter of the Grim Reaper kind.