Amidst a wave of harlot rapes and a murder, John is denounced by Rachel after refusing during a brothel stakeout to check up why fellow inspector Walter Nunn had been there. Gently has Rachel discretely make stats what happens to rape complaints: most are withdrawn, even the rare prosecutions rarely result in conviction, Nunn handled most but got all withdrawn. John's early leaving the job makes Gently suspect he has another lover, alas admittedly none other than Walter's wife Gemma Nunn, which he refuses to give up as 'last chance for happiness'. The trio finds several rapes occur near a bus station, where porn-addicted attendant Stuart MacMillan confesses even the murder, but is released as Gently considers him a mythomaniac. Walter Nunn's brothel visits and selective witness treatment are investigated, he turns on John for cuckolding him.
—KGF Vissers