For each one of my mafia series I suggest reading the series as they come, even though most of them are complete standalones. They don’t need to be read in order but it does add to the reader experience because you’ll see little snippets of each character in that time of their life, which will eventually lead into their own story.
However, if you want to read according to the chronological timeline this is the suggested reading order:
1
2
3
4
5
6
7
8
