Following a traumatic end to 1922, Jack Glennison's private detective business settles down to several months of thankfully mundane work. But he and Josine both know it can't last and, sure enough, the day comes when a familiar face arrives in their Manchester office, offering a case that will once more send them to Darkisle.The fourth book in the Glennison Darkisle Cases series sees Jack travel to the far north of the island to investigate a disappearance from a unique scientific expedition. Soon he must use all his skill and experience to untangle the truth from a web of jealousy and lies. And on top of that there is something going on among the locals, whose enigmatic hostility is unusual even by Darkisle standards.'Falls the Darkness' extends the series' exploration of Lovecraftian horror in 1920s Britain, building on the unique atmosphere of Darkisle and transporting the reader to a world where few can be trusted and where unearthly monstrosities lurk in the shadows.