Arthur Conan Doyle's first book out
The book has nothing to do with Sherlock Holmes and predates his creation by three years - the fan in the picture is there purely by way of illustration.
Other deceased writers still working
At least Doyle actually wrote this book, mind. Recent years have seen other characters outliving their creators quite spectacularly - Jeffrey Deaver's Carte Blanche was on the best sellers list and features an updated James Bond; a couple of years ago we had Sebastian Foulkes' take on the same character in "Devil May Care", following six books by Raymond Benson, 18 by John Gardner and one by Kingsley Amis writing under the name Robert Markham.
Maybe you don't like secret agents or detectives and would prefer "Peter Pan in Scarlet" which is apparently an official book but has nothing to do with J M Barrie. Or "The Wind Done Gone" by Alice Randall, a clever(ish) take on "Gone With The Wind" but seen from the point of view of the black characters only.
Perhaps you have a daughter who, like many, is entranced by Enid Blyton's St. Claire's books. OK, now have a closer look and you'll notice loads of them are not actually written by Blyton herself but still have her name over the top, almost like a brand.
Similar fates have fallen thriller writers like Len Deighton and Dick Francis, no longer with us but their names still adorn novels they can never read.
This time around at least we have a genuine Doyle book. The only problem is that by his own account the publishers were right to send it back in the first place (in fact they lost it and he had to rewrite it from memory) - in the author's own view, it's not very good.