While helping the JLU battle Black Light, Batman discovers the secret behind the Black Light's power.
The price of "Batman Beyond (1999) #22 [Direct Sales]" at Comic Book Relief is USD $3.50.
The publisher of "Batman Beyond (1999) #22 [Direct Sales]" is DC Entertainment.
The genre of "Batman Beyond (1999) #22 [Direct Sales]" is Superheroes.
"Batman Beyond (1999) #22 [Direct Sales]" falls under the category of Back Issues.