Orchid House. Lucinda Riley. 2012.

As a child, concert pianist Julia Forrester spent many idyllic hours in the hothouse of Wharton Park, the grand estate where her grandfather tended to exotic orchids. Years later, while struggling with overwhelming grief over the death of her husband and young child, she returns to this tranquil place. There she reunites with Kit Crawdads, heir to the estate and her possible salvation. 

Where they discover an old diary, Julia seeks out her grandmother to learn the truth behind a love affair that almost destroyed the estate. Their search taken them back to the 1940s when Harry, a former heir to Wharton Park, married his young society bride, Olivia, on the eve of World War II. When the two lovers are cruelly seperated, the impact will be felt for generations to come. 

This atmospheric story alternates between the magical world of Wharton Park and Thailand during World War II.