Ron Kamonohashi's Forbidden Deductions

The Case of the Midsummer Beachside Stand Drowning (Part 1) (2x4)

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Toto suggests that Ron take a rest. They invite Ron's doctor, Usaki Mofu, along and head for a dip in the ocean. Ron looks forward to having shaved ice with black sugar syrup from a beachside stand, but things soon take a tragic turn.