5 books in series
Group Fifteen Files
Group Fifteen Files is a 3-book series with 5 primary works first released in 2017 with contributions by Mark Dawson, Steve Cavanagh, Scott Mariani, and Michael Ridpath.
#1
2017 • 2 Readers
#2
2017 • 1 Reader
#3
2018 • 1 Reader • 126 pages • 3
#4
1 Reader • 253 pages
#5
1 Reader • 402 pages