How many books are in the A Gray Man Novel series?

There are 10 books in the A Gray Man Novel series.

When will the next book in the A Gray Man Novel series be released?

The next book in the A Gray Man Novel series, Relentless (Book 10), will be published in February 2021.

The first book in the A Gray Man Novel series, The Gray Man, was published in September 2009.

Order	Book	Genre	Date	Rating
1	The Gray Man	Thriller / T	Sep-2009	4.5
2	On Target	Thriller / T	Oct-2010	4
3	Ballistic	Thriller / T	Oct-2011	4.5
4	Dead Eye	Thriller / T	Dec-2013	4
5	Back Blast	Thriller / T	Feb-2016	4.5
6	Gunmetal Gray	Political Thriller / PT	Feb-2017	4.5
7	Agent in Place	Action Adventure / AA	Feb-2018	5
8	Mission Critical	Thriller / T	Feb-2019	4.5
9	One Minute Out	Thriller / T	Feb-2020	5

10	Relentless	Thriller / T	Feb-2021	0