A volume of 11 Biggles adventures: The Case of the Lost Coins: The British authorities sanction Biggles to fly to Albania and retrieve a valuable collection of coins which the owner has presented to the British Museum. The Case of the Old Masters: Biggles is asked to investigate the theft of some valuable paintings from a gallery. Since there would be no point exhibiting or selling these paintings in Britain or anywhere else where they would be widely known, Scotland Yard suspects that they must be taken abroad - and the most practical way would be to do it by air. Mystery on the Moor: While out on a routine patrol, Ginger spots another Auster landing near a farmhouse in Dartmoor. When he turns back for a second look, the aircraft had been hidden away. Biggles decides this needs to be investigated at ground level. The Two Bright Boys: Biggles is asked to investigate reports of a strange small aircraft which had been causing a flight hazard in Hertfordshire. Horace Takes a Hand: Fifteen year old Horace Wilberton brings Biggles a report about an Auster and its pilot behaving suspiciously in Dartmoor. Biggles Learns Something: As Biggles observes, in almost every case of illegal flying, the criminal made a point of choosing an isolated location. "Be funny, wouldn't it," he says to Ginger, "if a crook was smart enough to realise that and go to the other extreme by landing in the middle of a crowd of ten thousand people." Dangerous Freight: Biggles investigates a string of air crashes - and all of aircraft carrying shipments of gold. A Routine Job: Investigating how large shipments of marijuana cigarettes are getting into the country, Biggles, Ginger, Algy and Bertie find that it is very much a matter of routine police checks and patience. Dawn Patrol: While out on a dawn patrol, Ginger spots an aircraft which quickly dodges into cloud cover. Things begin to look even more suspicious when it turns out the aircraft was using false registration markings. The Trick That Failed: Ginger spots yet another aircraft behaving suspiciously while out on patrol. This time it is a French aircraft dodging among the clouds before putting down somewhere in the New Forest. The Case of the Early Boy: Gaskin shows Biggles a diamond necklace which was found in a tree in the Ashdown forest. Twenty-four hours before, it was seen adorning a princess in Monte Carlo. How did the necklace travel so far so quickly and what was it doing in a tree?