Lost Coast: A Post-Apocalyptic Zombie Thriller by Camille Picott
https://www.amazon.com/dp/B082D76DHS
This is book 3 but Calibre's matadata from Amazon returns book 4 (The last book in the series) which is "Fort Dead"
The GoodReads metadata returns #3 But it comes up on a separate line.
Most entries where the Amazon and GoodReads are combined to the same line in the metadata selection screen returns the correct Series #