Whodunit?

After spending a day in the outdoors digging, raking, trimming, mowing, etc, the troops came in to get cleaned up, recover, and nurse sunburns. Tragically, we suddenly had no water, and someone was caught in the shower after she had shampooed her fairly long hair but before she had a chance to rinse it. Not only was there shampoo drying in the hair, but grass clippings, dust, and who knows what else was hanging out in what could only have been referred to as a mop.

We went in search of what it could be. There were no obvious leaks, and we traced the pipeline down to the barn, where the water pump still showed the pressure was fine. Upon further reflection, we began to wonder if the valve by the water trough could be affecting it. Out of options, we went to check it out. SOMEHOW, it had been shut off. Looking around the corner, we found the only possible culprit:

Sure enough, he somehow had grabbed a hold of and/or messed with a garden-hose style spigot and turned it around enough to shut off the water line. Everyone else's alibi was legit. And for some reason, the water line that first goes by the watering trough is the line that feeds the rest of the property. ?!?! Our newest resident seems to be a fan of mischief. Now that we're onto him, I'm sure he'll be laying low for a while.