Darby Solo Sleuth was the first half of the final episode of the first season of My Friends Tigger & Pooh released to television in the United States. It was originally broadcast on August 16, 2008, but had previously been released on the DVD Friendly Tails on March 4, 2008. Darby and Buster are the only two Super Sleuths to answer the Sleuther Siren, summoning them to Kanga and Roo's house. There, they discover that Pooh, Tigger and Roo are sick with colds and that Kanga needs lemons for a special soup to help everyone feel better.