How perfectly splendid...

'I said, "How perfectly splendid". Just like one of those books that keep you up all night. The heroine always says "I can't explain" in the first chapter. She explains in the last, of course, and there's never any real reason why she shouldn't have done so in the begining - except that it would spoil the story. (...)'

Excerpt from "The Girl in the Train"
The Listerdale Mystery (1934)
Aghata Christie
Published by HarperCollins