"Double Dose" is the tenth episode of the second season of Superman: The Animated Series, and the 23rd of the overall series. It depicts the return of Livewire. After Livewire escapes from prison, she tries to kill Superman but finds his invulnerability to be far too great. In order to kill him she recruits the Parasite to drain Superman of his powers. Now Superman must deal with the double menace of Livewire and Parasite.