Supergirl’s run in Adventure Comics comes to a close with issue 424 (Oct 72), in a story that actually winds things up and sets the stage for her own comic. Steve Skeates handles the writing, while Tony de Zuniga and Bob Oskner take the art.
Linda has been successful at getting information from a mob informant, and looks to be in line for a promotion, which irritates Nasty. Linda finds herself falling for the guy, but is less than happy when he does not act to try to protect her when the mob tries to kill him.
When he flees after a grenade is thrown at him, Linda covers it with her body, and fakes her own death to teach him a lesson. This is really less than admirable behaviour on Supergirl’s part, as she shows no sympathy for a person who simply doesn’t want to die, and resents the fact that he does not sacrifice himself to save her, even though she is in no danger.
Figuring she will teach him a lesson, she pretends to be her own ghost to haunt him, but merely winds up a witness to his murder.
Her guilt over the situation changes to rage when Linda discovers Nasty gave the mob the information on who the informer was.
The ending involves a teleportation machine, which gave the assassin the illusion of being a ghost, and a mob graveyard in space, just to work in the cover image. After rounding up the gangsters, Linda returns to her news office.
A strong conclusion to her run, as she quits her job and leaves San Francisco. Hew own comic starts the following month.
Nasty does not appear again for a very long time. Later writers do not even acknowledge her existence, when writing about Lex Luthor and his family. It was Grant Morrison who finally brought her back, in All-Star Superman.