This is Book 3 of Olivia and Poppy Streete's European stories. Here them every Wednesday too in a complete short story on our sister podcast The Streete Files:
https://open.spotify.com/show/0hGywIY3ySiYKYFcdcM4vh
In the Rome Conspiracy, when the patriarch of a hotel chain in Rome is brutally killed and Olivia is asked to help find out what exactly happened, she and Poppy get drawn into a complex web of crimes from the past that have been hidden away. As they both learn more about the family, the guilty go on the attack to keep their secrets away from the daylight. The closer that Olivia and Poppy get, the more fraught it becomes and their lives are put in danger.