Jennifer Vido: For readers new to your brilliantly inventive and deliciously witty metaseries, please give us a quick overview of the three previous titles—The Word is Murder, The Sentence is Death, and A Line to Kill. Anthony Horowitz:  A private detective – Daniel Hawthorne – has decided to hire an author to follow his investigations and write them as books. The idea is that they’ll split the royalties 50/50. I’m the author he chose and I have to say it hasn’t been easy. Hawthorne’s first case involved the murder of a lady hours after she had arranged her own funeral. Then he investigated the death of a divorce lawyer bludgeoned to death with a wine bottle. On our third outing, we were invited to a literary festival on the island of Alderney. There had never been a murder on the island until we arrived.   Jen: What inspired your new release, THE TWIST OF A KNIFE? Anthony:  The Twist of a Knife tells what happened when a play of mine – it was called Mindgame – opened in London. It was savagely reviewed by a critic called Harriet Throsby and the next day she was stabbed to death at her…