Title: Death in Five Boxes
Content:  Death in Five Boxes is a mystery novel by the American writer John Dickson Carr, who published it under the name of Carter Dickson. It is a whodunnit and features the series detective Sir Henry Merrivale and his associate, Scotland Yard's Chief Inspector Humphrey Masters.
Title: Death in Five Boxes
Content:  all of them, yet someone has managed to poison them. Chief Inspector Masters brings in Sir Henry Merrivale to investigate the bizarre circumstances. At the offices of Charles Drake, Haye's lawyer, they find the evidence of five small boxes, all empty. They are each labeled with a name—the three guests, the clerk, and someone named "Judith Adams", who turns out to be a deceased author who wrote a book on legendary dragons. It takes all Sir Henry's ingenuity to work out the tangle of relationships and motives and reveal not only who stabbed Felix Haye, but also poisoned the cocktails and how—and why Judith Adams is the key to it all.
Title: Death in Five Boxes
Content:  According to Jacques Barzun and Wendell Hertig Taylor, "As usual, Carter Dickson's plot is extremely complicated and it depends on a variety of gimmicks, most of which are barely plausible. One good one is the method of poisoning the White Lady cocktails without anybody's going near the shaker or the glasses.  For the rest, the dialogue is in the worst style of false excitement and byplay, particularly the part allotted to the egregious Sir Henry Merrivale, who calls everybody "son" and yells "shut up" whenever he is stumped.  The early portion is dull, the middle chaotic, and the end interminable."
Title: Death Has Deep Roots
Content:  Death Has Deep Roots is the fifth novel by the British mystery writer Michael Gilbert. It was published in England by Hodder and Stoughton in 1951 and in the United States by Harper & Brothers in 1952. It is basically a classical courtroom trial story but with almost equally important thriller elements juxtaposed with the courtroom scenes. Although Inspector Hazlerigg, who had appeared in all of Gilbert's earlier novels as a mostly leading character, does play a role in this story, it is only in two brief appearances, once towards the beginning of the book and once again near the end. Two of the three main characters in this book are from previous novels, Major Angus McMann (They Never Looked Inside) and Noel Anthony Pontarlier ("Nap") Rumbold (The Doors Open). The other leading character, the trial barrister Hargest Macrae, also appears in some of Gilbert's early short stories.
Title: The 5th Horseman
Content:  The 5th Horseman is the fifth book in the Women's Murder Club series featuring Lindsay Boxer by James Patterson and Maxine Paetro first published on February 2006. The novel like many in the series was commercially successful and repeatedly appeared in Publishers Weekly bestseller lists, and high in the 2006 list at the end of that year.
Title: The Black Box (novel)
Content:  The Black Box is the 25th novel by American crime author Michael Connelly, and the sixteenth novel featuring Los Angeles Police Department detective Harry Bosch. The book was published on 26 November 2012, "in part to honor the 20th anniversary of the character".
Title: Death Masks
Content:  Death Masks is a 2003 novel by science fiction and fantasy author Jim Butcher. It is the fifth novel in The Dresden Files, his first published series that follows the character of Harry Dresden, professional wizard. This book is published by New American Library with the ISBN: 0-451-45940-7.
Title: Death of an Author
Content:  Death of an Author is a 1935 detective novel by E.C.R. Lorac, the pen name of the British writer Edith Caroline Rivett. It is a rare standalone book by Lorac, not featuring Chief Inspector MacDonald of Scotland Yard who appeared in a lengthy series of novels during the Golden Age of Detective Fiction. It was her final novel published by Sampson Low before she switched to the more prestigious Collins Crime Club with whom she remained for the rest of her career.
Title: The Death House
Content:  The Death House is a horror novel by English author Sarah Pinborough. It was first published in the United Kingdom on 26 February 2015 through Gollancz and was published in the United States through Titan Books later that same year. The book was nominated for the August Derleth Award for Best Horror Novel for 2016.
Title: Drop to His Death
Content:  Drop To His Death (also published under the title Fatal Descent) is a mystery novel by the American writer John Dickson Carr, who published it under the name of Carter Dickson, in collaboration with John Rhode. It is a locked room mystery.

Question: Who is the author of Death in Five Boxes?
Answer: John Dickson Carr.
John Carr.