After her mother's death, twenty-year-old Sophie Ross is left orphaned, with only her erstwhile nursemaid and faithful friend, Hannah for company. Penniless and little chance of an income, she looks for work as a governess in London to avoid destitution.

But unbeknown to Sophie, her mother instructed Hannah to post a letter to Trescadinnick House in Cornwall upon her death. The letter will be the catalyst that changes Sophie's life forever as she learns of her mother's doomed romance and family she left behind in Cornwall.

The Penvarrow family welcomes Sophie into their fold, but the new life she's built is threatened by secrets and lies that soon come to light...