Ned is sent away on holiday to the seaside, to stay with the Pickering family, who are shifty and unpleasant. Ned meets the charismatic Dallaker family on the beach and they become regular company for him. When Ned discovers that they are searching for their long-lost treasure, he wants to help.
July 1987 : UK Hardback
October 1972 : UK Hardback
September 1972 : USA Library Binding
May 2000 : UK Paperback
June 1978 : UK Paperback