A naïve young princess discovers just how messy love can get when she hooks up with an unusually charming (albeit slimy) frog. What would drive her to seek cold comfort in amphibian arms? Violent threats, or dastardly blackmail perhaps? Not quite. Grimm dives into the ooze with Frog King this week, keeping things greener than St. Patrick’s Day parade through a field of clover!