Superman in "Superman...Guilty of Homicide"
Written by Leo Dorfman, penciled by Curt Swan & inked by George Klein.
During an exhibition boxing match, Superman "accidentally" kills a man. When the coroner examines the facts, it is found that the 'tap' Superman delivered to the man was a killing blow.
This story continues in Action Comics #359.
Supergirl in "Superboy in Argo City"
Written by Cary Bates, penciled & inked by Jim Mooney.
A freak accident sends an unconscious Superboy hurtling into space, where he finally comes to rest in the domed city of Argo.
Cover art by Neal Adams.