When a dead man is found in a Soho strip club, it looks like a sex game has gone wrong. So when the deceased is discovered to be a police officer, Gene and Alex are ordered to keep the case under wraps.
The Lunatics (Have Taken over the Asylum) — Fun Boy Three
Opening sequence. Alex, Gene and team searching an underground tunnel
Gene and Alex leave widows house where they've just informed her of husband's death, and make way in car to strip club in Soho to meet up with rest of team