DC Comics has long been introducing fans to amazing mysteries. That's what happens when their most popular character is known as the greatest detective in the world. Superhero comics and secrets go hand in hand. Sometimes, the readers know them and the characters don't. Other times, they're a surprise for all involved. Many of these secrets have changed the face of the DC Multiverse, while others would blow open mysteries that have saved lives.
Source：https://www.cbr.com/dc-comics-big-secrets/
