Sean Gordon Murphy's Batman: Curse of the White Knight will soon release. 1 / 8
It's a sequel to Batman: White Knight, which took place in a separate continuity. 2 / 8
The book made plenty of startling revelations about Harley Quinn. 3 / 8
Now, Murphy has shown the sequel reveals the origin of Harley's 3-diamond logo. 4 / 8
The logo comes from Joker's first lover letter, written on a 3 of diamonds card. 5 / 8
Harley Quinn's costume feature the 3-diamond logo in one form or another. 6 / 8
However, it's unclear how true that origin is for the main DC Universe. 7 / 8
Batman: Curse of the White Knight #1 will hit shelves July 24. 8 / 8