A young woman named Ruth Rose is found dead in her home, with a black cross marked on her forehead. The investigation reveals that she was poisoned with belladonna, and the killer left a mysterious note at the scene. As the detective delves deeper into the case, he uncovers a web of deceit and betrayal that leads to a surprising conclusion.
By Anna Katharine Green · First published 1907 · Genre: Mystery, Detective fiction, Crime Fiction