In the midst of a heatwave and a citywide blackout, Officer John Nolan and Aaron follow increasingly large leads after they discover criminals hiding at the station. While on duty, Officer Chen makes an alarming discovery after being called to a scene where a pungent smell has wreaked havoc. Meanwhile, Lucy and Harper scheme to get Tim out of his new job and into a more exciting position.
Baby Doll becomes enamored of Killer Croc, and the pair forms a very unlikely yet very successful criminal duo. However, their partnership soon falls apart when Baby Doll learns that Croc is only using her to further his own criminal career.
A lovelorn pyrotechnic engineer, Garfield Lynns, gets dumped by a big time singer named Cassidy. Lynns becomes the supervillain Firefly, bent on burning the woman who burned him.
A special gift for the twins sparks tension in the group.
A journey of survival begins when an army of Witchfinders attacks the village of Alkenny.
During a fight with the Scarecrow, Batgirl is ambushed on a rooftop and falls to her death. Having watched his daughter’s demise, Jim Gordon blames Batman for her fate and vows revenge, even recruiting Bane in the process.