Disappearing Act (S04E19)

S04E01 Jerky Jasper S04E02 Dinosaur Day S04E03 RV Olympics S04E04 Uncle Melvins S04E05 Uncle Baseball S04E06 Costume Crisis S04E07 Uncle Grandpa Runs for President S04E08 Chill Out S04E09 The Bike Ride S04E10 Mr. Gus Moves Out S04E11 Hiccup Havok S04E12 MacGuffin S04E13 Gone to His Head S04E14 Pony Tale S04E15 You Can't Handle the Tooth! S04E16 A Gift for Gus S04E17 Robo-UG S04E18 Lil' Mac S04E19 Disappearing Act S04E20 Tongue Tied S04E21 Uncle Dummy S04E22 Face Fix S04E23 The Phone Call S04E24 Uncle Cupid S04E25 Doctor Visit S04E26 Cake Mistake