Britains most popular bobby turns detective! A delightful account of Constable Rheas foray into the CID whose initials are said to mean Constable in Disguise. Young Rhea is appointed as an Aide to the CID an essential part of every constables training. Adopting civilian clothes he joins the Criminal Investigation Department to learn about the work of the men in plain clothes. Asked to keep a watchful eye on a house thought to be used as a brothel Rhea quietly climbs the roof & sends a tile crashing through the window. When the woman resident & her five brothers set about the neighbours for causing the damage the police turn out in force & arrest everybody.. .meanwhile Rhea lies low on the roof. Investigating a series of housebreakings the CID visit a local snooker hall. There the Detective Sergeant challenges two strong suspects to a match on the understanding that if he wins they will admit to the crime. Packed with stories that reveal the joys & sorrows of country folk Constable in Disguise" creates a colourful picture of Rheas foray into detective work in North Yorkshire."