>The redoubtable Inspector Higgins of the Criminal Investigation Department at New Scotland Yard went fishing for a stolen necklace and, instead, caught a corpse. And that was just the beginning. With Sergeant Brownall to help him he was soon up to his waders in an Investigation into a most devious crime of the high calibre - both as intellectual exercise and as enter- tainment that admirers of the work of Cecil Freeman Gregg have long come to expect.