The third girl

Early in the morning, a young eccentric girl named Norma Restarick called at the home to the famous detective Hercule Poirot and asked to see him. Looked like a lady no matter: scared, nervous, unbalanced. From her vague explanation, could understand only one thing: she does not rule out that he committed the murder. However, she couldn't remember the name of the victim, nor the circumstances of the murder or the crime scene. The murderer and the murder itself is not detected. Search crimes and have to deal with Hercule Poirot.