Fan Casting Typhoid Mary in Joe Carnahan's Daredevil: The Man Without Fear

The assassin known as Typhoid Mary is a classic case of an extreme Multiple Personality Disorder or Dissociative Personality Disorder (popularly called a "split personality"), possessing two known personalities: "Typhoid" and "Mary". The cause of this disorder is not known. Mary is a shy woman who often stammers, and yet has shown great skill in immersing herself in a role; under the name Mary Walker (presumably her real name), she once was a rising off-Broadway actress before she suddenly disappeared. Typhoid, on the other hand, is a cruel, vicious killer; as Typhoid she runs a constant fever and her heart rate is erratic. Typhoid is aware of and despises Mary, while Mary appears to be unaware of her killer alter ego; it seems Typhoid can direct Mary to some extent. Typhoid first came to the attention of the authorities when she first clashed with Daredevil while trying to assassinate a lieutenant in the Maggia's Hammerhead family. Despite Daredevil's interference, Typhoid was successful in the assassination, but then apparently disappeared completely; as Mary she ran away and cowered in a subway car. A little later, Typhoid met with the Kingpin, who congratulated her on succeeding where others had failed, killing a target even with Daredevil's interference. He gave her the task of finding out all she could about his nemesis and eliminating him. Not long after, Matt Murdock, Daredevil's alter ego, and his friend Franklin "Foggy" Nelson were introduced to Mary by a mutual acquaintance at a high society party they'd been invited to. Whether Typhoid is influencing Mary or whether Mary is attempting to restart her life even with Typhoid's interference is unknown. Typhoid does not yet know Murdock and Daredevil are the same, but has her suspicions.