The Hunter Valley, 1880. Evie Ludgrove loves to chart the landscape around her home--hardly surprising since she grew up in the shadow of her father's obsession with the great Australian explorer Dr. Ludwig Leichhardt. So when an advertisement appears in The Bulletin magazine offering a thousand-pound reward for proof of where Leichhardt met his fate, Evie is determined to use her father's papers to unravel the secret. But when Evie sets out to prove her theory, she vanishes without a trace, leaving behind a mystery that haunts her family for thirty years. Letitia Rawlings arrives at the family estate in her Ford Model T to inform her great-aunt Olivia of a loss in their family. But Letitia is also escaping her own problems--her brother's sudden death, her mother's scheming, and her dissatisfaction with the life planned out for her. So when Letitia discovers a beautifully illustrated map that might hold a clue to the fate of her missing aunt, Evie Ludgrove, she sets out to discover the truth. But all is not as it seems, and Letitia begins to realize that solving the mystery of her family's past could offer as much peril as redemption.