By Campbell Geeslin
February 27, 1984 12:00 PM

by Dennis Sanders and Len Lovallo

The late great mystery writer lives on in her books, despite her disclaimer: “I regard my work as of no importance—I’ve simply been out to entertain.” The subtitle of this reference book is The Complete Guide to Agatha Christie’s Life and Work. Before her death in 1976 she had published 84 volumes of mysteries and short stories and 11 more books of poetry, autobiography and miscellany. She wrote seven plays and adapted eight fiction works for the theater, and 22 films have been based on her books and plays. In the introduction to this 500-page volume there is a sample entry about one of Christie’s best: “The Murder of Roger Ackroyd [is] the book that made Christie famous, mainly because of the sensational and controversial solution to the mystery.” Later the authors outline the plot without revealing the ending. Since new editions of Christie novels continue to be published, this Companion is indispensable for serious fans who think they may have already read The ABC Murders or Towards Zero. Now they can check to make sure, even if they know who done it. (Delacorte, $19.95)