Inspector Gadget (2015) (2015)

S8E19 Serena's Youth Pill

In her final appearance, Serena takes on babysitting duties with Tabitha and Adam. When Larry stops by to drop off a golf club, Serena channels her inner Abby Cunningham and catches his attention. Although he leaves in a rush, Serena slips him a pill designed to restore youth and vitality (well before Viagra!). The effects are astonishing, as Larry rapidly regresses in age by a decade, sparking concern among the group. To save him from becoming a child, Serena administers an antidote, reverting him back to his original self.