Sorrow on Sunday

Someone's been stealing tack from the equestrian set, and then a local ne'er-do-well is killed when his horse bolts in front of his van. With a new, possibly untrustworthy employee on her hands, Lois doesn't know quite what to make of all these disturbances, but it soon becomes clear that she'd better figure it out posthaste, or she herself may take a nasty tumble.