A gritty and heartrending drama set in 19th-century Cornwall. Orphan Sophie and her friend Hannah are welcomed into the Penvarrow family but tensions rise and family secrets are revealed.

A new emotional and gritty drama from the bestselling author of The Throwaway Children. 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... What readers are saying about Miss Mary's Daughter: 'Diney Costeloe's books are always first on my list, she writes such wonderful stories' 'I loved everything about this novel. It's an intriguing plot with a well-rounded group of characters and a beautifully written setting'.