 The plot of "Starcrossed" blends elements of two JLA comic book  storylines: the White Martian invasion storyline written by Grant  Morrison (extraterrestrials related to one of the League members  land offering assistance as cover for a planned invasion) and the  Ras Al Ghul storyline by Mark Waid (detailed information on team  members gathered surreptitiously by one of the League members is  used by an outside force against the League).