A teenager is found dead and, while his body was found elsewhere, the location of death is determined to be at the gates to an estate owned by a 60s rocker, a hero of Lewis's youth. The band he was in, Midnight Addiction, appears to be reuniting, an event made possible by the female vocalist returning after being dead for 35 years.
An episode that started badly but got better as it went on. In drawing the characters of the members of the band the writers drew upon just about every 60s/70s rock 'n roll cliché and stereotype imaginable: the drugs, the dress-like-a-pirate attire, androgynous looks, the lingo (ending each sentence with "man", calling the police "pigs" etc). The writers probably imagined that is what Keith Richards is like at home and shaped the characters and their speech accordingly. It's just so clumsy and lacking in any grounding in reality.
The story is okay though, once you get past the absurd characters. A fair amount of mystery and a some good detective work by Lewis.
Can't fault the cast though. The guest names include some established stars - Joanna Lumley, Simon Callow, Helen Baxendale, David Hayman - plus future stars in Daniel Kaluuya and Perdita Weeks. Just a pity they were generally given such lousy characters to play.