JSA Liberty Files The Whistling Skull # 4 (DC Comics 2013)

Nigel's father hasn't been around in a while, but in 1940s London that's not unusual.
Fortunately, his friend William can take up the slack, personally and as the Whistling Skull!
But when they join The Skeleton, will working together be enough to save the day against Nazi scientific horrors?

JSA Liberty Files The Whistling Skull # 4 is written by B. Clay Moore with art and a cover by Tony Harris.

JSA Liberty Files The Whistling Skull # 4 is a 32 page comic book in full color.