Harley is trapped in S.T.A.R. Labs with no escape! Abandoned and alone, the former Clown Princess of Crime must face down a horde of invading interdimensional aliens…but is she locked in there with them—or are they locked in there with her?
List of covers and their creators:CoverNameCreator(s)Sidebar LocationRegRegular CoverGuillem March & Arif Prianto1VarVariant CoverFrank Cho & Sabine Rich2
