UPDATED: “I’m going to do what so many have failed to do… I’m going to kill him.”

Apologies. We've corrected the art credits below. Escaping from Arkham Asylum isn’t easy, unless you have the right tools. Armed with a rusty nail, some marbles, a trick flower, and a crowbar, Harley Quinn makes a break for it. She’s done joking around in GOTHAM CITY SIRENS #20, by Peter Calloway and artists Andres Guinaldo, Lorenzo Ruggiero and Ramon Bachs, and now nothing is going to stand in her way. On sale February 23.