The Magician's Nephew (S11E05)

During a performance, Jean Wildacre mysteriously dies while assisting local magician Aloysius Wilmington, prompting detectives Barnaby and Jones to step in. Their investigation delves into the intricate dynamics of Midsomer's Magic Circle, a group of longtime friends whose interactions birthed a controversial cult and fueled deep-seated rivalries. As the case unfolds, the detectives find themselves searching for vibrant poison-dart frogs from South America, all while the body count continues to escalate.