Not my cup of tea, and I'm sorry to say I abandoned it. The characters were more like caricatures than real people, particularly the maid. The Sherlock Holmes type detective is completely vile and obnoxious, and while I might have missed something by starting on Book 4 in a series, I did not find enough to hold my interest. It would also benefit from editing as there were spelling errors (or poor use of spellchecking).
Thanks to the publisher for a review copy.

It is London, 1883. Sidney Grice is not a Private Investigator; he is a 'Personal Detective'. He is also incredibly rude, sarcastic, arrogant and probably borderline autistic. He is obsessed by order and by numbers, particularly the number 14. He admits to liking no-one and would be horrified should anyone admit to liking him.

He is Godfather and Guardian to a young woman, March Middleton, whom he saved from incarceration in Broadmoor, and who has the rather dubious honour of being his assistant.

This is a rather entertaining rendition of the locked room murder. But in the plural. Both in murders and rooms.

I found the first few chapters more than a little confusing, and I have to admit to not enjoying this book at the outset. This may have been because this is #4 in a series of which I have not read any of the previous books and so had none of the back-history. But, everything is explained and all becomes clear not too far into the story. After this point, I settled down to enjoy my read.

3.5 stars for The Secrets of Gaslight Lane by M.R.C. Kasasian.

Thank you to NetGalley and Head of Zeus for providing a digital ARC of The Secrets of gaslight Lane for review. All opinions expressed are entirely my own.