The Tycoon's Bride (The Greek Tycoons) (Harlequin Presents, 2106)

He wanted the baby...
Claire Stenson was trying to look after her baby sister alone. She was on the verge of taking drastic action when she met Andreas Markopoulou, a sexy Greek tycoon -- and the answer to her prayers.
Andreas offered to marry Claire and adopt Melanie. His adored grandmother longed to hold her great-grandchild before she died. It seemed Andreas would go to any lengths to grant his grandmother's wish, even if that meant deceiving everybody -- including his new bride