Steve Punt turns private investigator, examining little mysteries that perplex, amuse and beguile. In these three episodes, he delves into the case of a couple who found 400 false legs hidden under their floorboards; investigates the case of the missing steam trains supposedly hidden away ready to keep the country running in the event of nuclear war and explores the area around Dark Peak in the Peak District, which can claim to be Britain's own Bermuda Triangle.