The Sins Of The Wolf by Anne Perry

Set in Victorian England, this gripping mystery follows the resilient and astute nurse, Hester Latterly, who finds herself embroiled in a murder investigation after being accused of poisoning her wealthy patient, Mary Farraline, during a train journey to London. As Hester faces the gallows, her friend and private investigator, William Monk, races against time to uncover the truth, delving into the secrets and lies of the Farraline family. With the stakes high and the clock ticking, Monk must navigate a web of deceit and betrayal to prove Hester's innocence and reveal the true culprit behind the sinister plot.