Birds of Prey (2011) #5

After [REDACTED] in issue #4, the team agrees to take 24 hours to take stock of what just happened. But there's no such thing as R&R for the Birds of Prey, as Black Canary realizes that Gotham City is still in grave danger. And the key to unmasking the villain known as 'Choke' may lie in the mystery of a man who one day just walked out on his family and life…and into a world of mind-control and murder.