Present day - Kate and Nico Collins are filming a docudrama about life in their home Armstrong House in Ireland during its golden age at the turn of the century. When they discover a cover-up of a terrible crime involving Nico's great-grandfather Lord Charles Armstrong, they set out to solve a mystery over a century old. 1888 - Arabella Tattinger arrives to attend a glittering ball at Armstrong House as the family's younger son Harrison's fiancee. Her head is turned by the glamorous aristocratic family, and most of all by the eldest son and heir, the exciting but dangerous Charles. A chain of events unfolds from that night which casts the family into years of a bitter feud. 1899 - When American heiress Victoria Van Hoeven marries into the family, she is determined bring peace at last to the Armstrongs. But everywhere dangers are circling and secrets are ready to emerge from the shadows. Not just from outside the house but from within their golden circle. Victoria is stepping into the firestorm. Kate and Nico press on in their efforts to uncover the truth - but are some secrets best kept hidden?