You may have seen Black Siren in the TV show called The Flash, played by Katie Cassidy. In the comics, Black Siren's real name was actually Donna Nance. In this story, she goes by Donna Spear. Her scream, if loud enough, could kill a human being. It could take down an entire building in one squeal. She was captured and put into the same hellhole with Deadshot, Captain Boomerang, Harley Quinn, Killer Croc, and Diablo. Now she has to work with them and Katana to take down Enchantress and her brother. She has to save the world. But at what cost?