Batgirl and the Birds of Prey (2016) #2

WHO IS ORACLE?' part 3! Batgirl, Black Canary, and Huntress must team up with the GCPD to protect a mafia capo from an attack by his one-time friends! He's the only man with a lead on the nefarious new Oraclebut dead men tell no tales! Of course, it's hard to make a team-up work when the team's ready to tear itself apart on its first mission!