'Though circumstances had forced on the twin sisters Wendy and Pamela Munro a humdrum life as typists in the quiet backwater of a city office, the urge to travel and find adventure was strong within them - with no prospect of being satisfied, as far as they could see.
'Until one day a letter arrived for them which changed everything. An uncle of whom they had never heard had died in Australia leaving them a house, a yacht, the Dolphin, and an income - small, it is true, but enough to warrant their dashing off to Brisbane without delay.
'This in itself was adventure enough even for Wendy and Pamela; but when on arrival in Australia they learned more of the mystery surrounding their uncle's death, they could not resist sailing off in the Dolphin on a quest which provided thrills enough to last them a lifetime.'
(from Dust Jacket)
