BarnabyandDSBenJonesinvestigatethedeathofSimonBrightwhoisfounddeadinsideanoldWorldWarIIvintageHumberparkedatanabandonedairfield.Fromallappearances,thedeathappearstobeasuicide,butthepathologistdeterminesthatthemansufferedasevereblowtothedeadandmayinfacthavebeenunconsciouswhenhediedofcarbonmonoxidepoisoning.SimonBright'sgirlfriend,LauraSharp,isnowheretobefound,butthedeathoftheagingvillageLotharioandtheattemptedmurderofanotherofherfriendsnarrowsthelistofpossiblemurdererssomewhat.BarnabyisconvincedthatoneofLaura'sex-loversisresponsiblebutgivenherratheractivelife,thequestionbecomeswhichone?