In the chilling mist of 1921 Ireland, a country caught between the echoes of war and the whispers of a new conflict, stands Kilcolgan House, a family estate weighted with secrets. The Great War has passed, but a family tragedy and the vision of ghosts afflict the noble Prendeville household. The sudden demise of Maud Prendeville, Lord Kilcolgan's heir, during an IRA ambush leaves the family in turmoil. Captain Tom Harkin, an intelligence officer entwined with the family's past, is dispatched to unveil the truth of Maud's fate. Amid doubts cast by the IRA, specters of deception, and his own haunted memories, can Harkin excavate the buried truths before the mansion's ominous atmosphere engulfs his sense of reality? 'The Winter Guest' is a gothic tapestry of mystery and the supernatural, inviting readers into a labyrinth of family secrets where the line between ally and adversary blurs.