The Mystery of the Disappearing Pie / Duck's Family Reunion

S1, E4: When Pig's pie for Bear goes missing, it's up to Detective Sheep to follow the letter clues and solve the mystery of the disappearing pie! Because they have a similar sounding name, Duck mistakes a truck for a log-lost relative! Frog is a bit ruffled at the epidemic of silliness going around, but ends up saving the day for Duck and his word "family."