Teenage Mutant Ninja Turtles, Volume 21: Battle Lines
Author: Kevin Eastman, Tom Waltz, Dave Wachter
Publisher: IDW Publishing
Release Date: April 30, 2019
The longest running TMNT series continues as new dangers and enemies force the Turtles to make tough choices--and they won't always be in agreement!
Multiple sources of conflict collide as the maniacal Agent Bishop goes to war with the alien forces on Earth, driving the Turtles to embrace unsavory alliances and race to stop a massacre. But this complex web of enemies and allies--as well as new divisions between the Turtles themselves--may thwart any chance they have for success!
Collects issues #86-90 of IDW's Teenage Mutant Ninja Turtles series.