Batman Arkham Origins: Hidden Easter Eggs & Secrets You Need To Find
(3 of 10) Batman World's Greatest Detective
If you explore the cave a little, you will discover the board above, showing Batman’s attention to the Red Hood case, and revealing that the case remains open.
This could be a possible hint at some upcoming DLC, as Red Hood would be a great addition to the character list.
A wall in GC Police Department, which gives some insight into the relationship between some of the criminal characters in Gotham.