I found that the trouble with Agatha Christie books was/is that after reading the first 3 or 4 the formula was obvious and that the murderer could be worked out way in advance of the final chapter.....I had read most of them by 14 and only so I could prove myself right in my own deductions!! Her characters, however , were much more fun...I liked Tommy and Tuppence and Miss Marple very much
Which are your favourites?
I don't think she is an author who has "finest novels" they are entertaining pot boilers. Personally I prefer Dorothy Sayers or Georgette Heyer for vintage whodunnits