Margery Allingham wrote 'The White Cottage Mystery', her first detective novel, as a fascicle for the Daily Express and it was first published in 1928. Her sister Joyce Allingham has edited this edition by removing the re-empathising of certain vital elements of the plot that the author had to put in the newspaper serial in order for the casual reader to be able to keep pace with the plot. It is seamlessly done, although, knowing that it was a newspaper serial, one can quite easily see where one episode ended and another began ... but this takes nothing away from the finished product.
Jerry Challenor meets up with a young lady as she alights from the bus and offers her a lift to her home, which turns out to be White Cottage. After he drops her off, events suddenly take a dramatic turn. He had seen a chap walking towards the cottage as he was about to depart but before he had got going, another young lady runs out of the cottage screaming that there had been a murder. From that moment on the seven people who lived in the cottage were all under suspicion of having done the foul deed.
And to find out who had done it, Detective Chief Inspector Challenor, Jerry's father, was called in to investigate. The murdered man was a certain Eric Crowther who lived next door to the cottage in a house named Dene. The problem was that he was regularly making a nuisance of himself and nobody liked him for he was an intrusive and somewhat disreputable soul, so most of the inhabitants of White Cottage could have had good reason to commit the crime.
Challenor has to find out more about Crowther's past and this is difficult for nobody really wants to talk about it. However, he does manage to find enough detail for him to consider all the possibilities but there is a problem for his thoughts were, 'Everyone ought to have done it, but by the evidence nobody had.' But there was no doubting that Crowther had been murdered.
His investigations, and he was helped by his son, took him all over Europe as he desperately tried to unravel the mystery and with extreme diligence, and a certain amount of intuition, he eventually comes up with the answer. And that answer is the most surprising one of all which makes the denouement of the book very unusual and, rather mildly paced throughout, the mystery suddenly comes very much to life at the end.