The Avenger is a fast-moving mystery and romantic thriller by E. Phillips Oppenheim, set within the elegant but dangerous world of Edwardian London.Herbert Wrayson returns to his apartment one evening and discovers a mysterious veiled woman searching through his desk. She has entered the wrong rooms and intended to visit his neighbor, Morris Barnes, a secretive adventurer recently returned from Africa. Before Wrayson can learn her identity or purpose, she disappears.Later that night, Barnes is found dead inside a waiting carriage. Wrayson withholds information about the woman from the police, uncertain whether he is protecting an innocent stranger or helping someone connected to the murder. His search for answers leads him through London clubs, private apartments, lawyers’ offices, fashionable theatres, and hidden political circles.As further violence follows, Wrayson becomes entangled in blackmail, disputed identities, international intrigue, and long-buried secrets. His growing attachment to the elusive Louise makes the truth even more difficult to confront.Originally published as The Conspirators, this compelling novel blends murder mystery, adventure, romance, and private revenge into a carefully constructed story filled with suspense and unexpected revelations.