It is happening now. As it has been happening ever since Edith Horton ran stumbling and screaming towards the plain. As it will go on happening until the end of time. The scene is never varied by so much as the falling of a leaf or the flight of a bird. To the four people on the Rock it is always acted out in the tepid twilight of a present without a past. Their joys and agonies are forever new … So on a million summer evenings the pattern forms and re-forms upon the crags and pinnacles of the Hanging Rock.
Joan Lindsey, Picnic at Hanging Rock
All the suspects in a classic murder mystery have secrets, and to keep them they lie, dissemble, evade the interrogations of the investigator. Everyone seems guilty because everyone has something to hide. For most of them, though, the secret is not murder. This is the trick on which detective fiction turns.
The danger, in a real murder case, was that the detective might fail to solve the crime he had been sent to investigate. He might instead get lost in the tangle of the past, mired in the mess he had dug up.
Kate Summerscale, The Suspicions of Mr Whicher, or the Murder at Road Hill House
Won’t we be quite the pair?—you with your bad heart; me with my bad head. Together, though, we might have something worthwhile.