An Unwelcome Guest — Emily Organ

Some say the Hotel Tempesta is cursed, but its owner, Mr Gallo, refuses to believe it. When he's brutally murdered one night, the suspicion falls on his guests. Ten suspects in total. And Penny Green is one of them.
Does Mr Gallo's murder have anything to do with the criminal mastermind on the run from America? Penny and Inspector James Blakely must negotiate a world of courtesans, stolen paintings and secret codes to prove Penny's innocence and uncover the truth.

What readers say about Penny Green:
�...�...�...�...�... “A Victorian Delight!”
�...�...�...�...�... “Good clean mystery in an enjoyable historical setting”
�...�...�...�...�... “If you are unfamiliar with the Penny Green Series, acquaint yourselves immediately!”
�...�...�...�...�... “Interesting, complex, believable characters”
�...�...�...�...�... “I found myself enthralled by Penny Green”
�...�...�...�...�... “An outstanding female lead character”
�...�...�...�...�... “I was engrossed from beginning to end”
�...�...�...�...�... “If you like Agatha Christie books you are going to like this one”
�...�...�...�...�... “I have found Ms. Organ's story telling to be flawlessly entertaining!”
�...�...�...�...�... “Very strong mystery set in a very interesting time and place”
�...�...�...�...�... “Ms. Organ draws you into Penny's world with her delicious descriptions and masterful story telling”
�...�...�...�...�... “I am very pleased with how this series is becoming one of my favorites!”
�...�...�...�...�... “Read the books in this series.... guarantee you won't be disappointed!”
�...�...�...�...�... “A great read with a real twist at the end. Emily just gets better and better with this series.”
An Unwelcome Guest is Book 7 in the Penny Green Mystery Series set in 1880s London. The books can be read in any order:
Book 1 - Limelight
Book 2 - The Rookery
Book 3 - The Maid's Secret
Book 4 - The Inventor
Book 5 - Curse of the Poppy
Book 6 - The Bermondsey Poisoner
Book 7 - An Unwelcome Guest