Laura MacNoon, beneficiary of the fabulously wealthy MacNoon Trust. Marine archeologist, and local Marine Manager brings the 'Lurcher 'to Wydinyer in search of the wrecks of historic galleons reputed to lie on the offshore Effingham Islands.Back in London the new Chairman of the Family Trust, Demetrie, is using Laura's venture to float a dubious share issue. Laura and Demetrie, the chairman, and her cousin's lover, are in conflict. Laura hopes that by chartering the ship to a Taiwanese film company she can complicate the share issue.