After rescuing Commissioner Jim Gordon and Batgirl Cassandra Cain from the anti-life equation zombies, Red Hood and Cassandra unmasked themselves in front of Jim, explaining that Jim doesn’t have to play Batman’s game anymore since the latter’s dead. A great detective, Jim immediately deduces the identity of the entire Bat family just by knowing Jason and Cassandra’s alter egos.
From – DCeased: The Unkillables #1