In one novel by this author, Bill Hingest is murde
In one novel by this author, Bill Hingest is murdered after he resigns from the National Institute for Co-ordinated Experiments. That novel is the third one featuring philology professor Elwin Ransom, who first appears in Out of the Silent Planet. Another work by this author describes a patient who dies during World War Two after being tempted by an apprentice demon. That work consists of thirty-one letters written to Wormwood. This author also wrote  several books that conclude soon after Rishda Tarkaan is defeated by King Tirian. Those books include the  adventures of the Pevensie children, who are guided by the lion Aslan. Name this author of The Screwtape Letters and The Chronicles of Narnia.
In one novel by this author, Bill Hingest is murdered after he resigns from the National Institute for Co-ordinated Experiments.