Missing Linka is the fourth episode in the fourth series of Captain Planet and the Planeteers. It was written by Nick Boxer, Sean Catherine Derek and Laren Bright.
There are no eco-villains in this episode.
Linka receives a letter from her brother Mishka telling her that their grandmother is unwell. Linka leaves the Planeteers to take care of her. As the other Planeteers deal with cleaning up a toxic spill, Linka finds herself in the middle of a mystery in her hometown, which may explain why her grandmother is so ill. She is also followed by a mysterious stranger...