Ibiza's reputation as a clubbing paradise sits on top of a working drug economy, and this third and final episode of a BBC series goes looking for it in San Antonio, using undercover filming to get close to dealers who normally avoid cameras. A British expat describes how easily he slid into selling and how the island's dealer-supplier network keeps itself running, while a local Spanish dealer talks about police surveillance and undercover operations closing in on his business. Tourists speak openly about buying and using drugs on nights out, and the film balances their accounts against a hospital doctor describing the physical toll he treats and a therapist explaining the addiction patterns she sees in clients. Police officers detail the specific difficulty of policing nightclubs and beaches at scale, and a customs official lays out why intercepting drugs at Ibiza's ports and airports is so hard. Made in 2005, the episode treats the trade as an economy with its own logistics and pressures rather than a single scandal.