Seven Sisters. The Lost Sister

Thanks to the will of their adoptive father Pa Salt, each of the six Deplessi sisters was able to embark on a unique journey to the land of their ancestors and discover the secret of their birth.
But one question remains unanswered. Who is their lost seventh sister, whom Pa Salt never adopted? Where should she be searched for?
The Deplessi sisters have only one clue – a ring with seven emeralds.
From New Zealand to Canada, France, and Ireland – the brave women of the Deplessi family set off on their journey again.
An astonishing story of love and sacrifice will unfold before them, the beginning of which was laid almost a century ago.