Please note: This is a companion version & not the original book. Book Preview:

#1 The fingerprint, with its distinctive pattern of lines and curves, has become a universal embodiment of crime. It is a pattern so characteristic and specific, it can tell a story almost without the need for explanation.

#2 The Detection Club, which was founded in 1930, was open to both women and men, but it was only writers of detection fiction who were allowed to join. Christie was president from 1957 until her death in 1976.

#3 The Detection Club was a group of crime fiction writers who met to discuss their craft and collaborate on books and radio broadcasts. It was an important resource for Christie going forward, as it allowed her to converse with other writers about crime and fiction from the early stages of her career.

#4 The purpose of ridge detail on the fingertips is simply to provide some mammals with friction on smooth surfaces. However, the patterns created as a by-product have become one of the best forensic identifiers.