"Darby's Im-possum-ible Case" is the second segment of the sixty-third episode of My Friends Tigger & Pooh.
Synopsis[]
Piglet calls the Sleuths, disturbed by a strange new creature in the Hundred Acre Wood. The Sleuths discover it to be Possum, who seems to be very shy and apologizes for having apparently disturbed Piglet. But when Possum swings in again and snatches Piglet's scarf, everyone begins to think that there's something very odd going on.