For 10 points, name this author of
This author created Mrs. Oliver, an author who frequently relies on her "feminine intuition." This author's first novel was The Mysterious Affair at Styles, which introduced a character who often worked with Japp. One of this author's works is narrated by Dr. James Sheppard, the (*) killer of Roger Ackroyd, and this author created an elderly amateur detective named Miss Marple. In one of this author's novels, the residents of Soldier Island are killed one by one, and in another Hercule Poirot deduces that everyone on the title transport is complicit. For 10 points, name this author of And Then There Were None and Murder On the Orient Express.
This author created Mrs. Oliver, an author who frequently relies on her "feminine intuition.
Dame Agatha (Mary Clarissa) Christie (or Agatha Miller; accept Mary Westmacott before mention; Ed’s note: fun fact: Christie once disappeared for 10 days. To this day, no one but her knows what happened. #strangerthanfiction)