I love the idea of Lynn Shepherd's Tom-All-Alone's which is based on Charles Dickens' Bleak House. It does help to know the Dickens original and that adds extra nuances to the book - including understanding who the murderer is - but the new characters are very strong and their stories add much to the book. It's also interesting seeing Dickens' Inspector Bucket from a different angle. I thought Shepherd's Charles Maddox, a former police officer, now private detective, was a great character and it will be interesting to see him in future books.
There is much to recommend this book and I just wish the frequent comparisons to the more modern world, including the First World War in the 1850s-set book's first paragraph, had been omitted as they undermine the book, forcing the reader out of Victorian London and into more modern times or even the present world which makes for uncomfortable reading - and is the reason this, for me, is a 3* book.
But the writing and plotting is excellent. I recommend reading it - then reading Dickens' Bleak House.