Fans of golden-era mysteries will relish the twists and turns of J. S. Fletcherâs âThe Chestermarke Instinctâ. This cleverly crafted mystery begins with what seems like a common enough occurrence: a bank manager is late for work one morning. But what first appears to be simply a matter of a missed train soon is revealed to be a much more vexing problem. Has the manager, formerly a pillar of honesty, absconded with the missing bankâs items, or has something more sinister occurred? When a body is found at the bottom of an abandoned lead mine, the latter seems more likely. Wallington Neale, the bankâs assistant manager, must discover whether it is a case of embezzlement or if the events the result of... The Chestermarke Instinct.