Detective Comics Vol. 6: Fall of the Batmen (Rebirth)
Everyone in Batman's orbit is broken somehow - some more than others. For Clayface, keeping the pieces of his psyche together has been a years-long struggle...and it's a war he may be about to lose! And as the team tries to pull itself back together, their enemies have learned something from Batman's newfound spirit of cooperation... and have formed a cabal of their own!
Collects DETECTIVE COMICS #969-974 and ANNUAL #1.