Complex sentence: Erika discovers that this Rorschach is not Walter Kovacs, but a successor, and refuses to assist him unless they also release her husband Marcos Maez, also known as the Mime.
Split into simpler sentences: Erika discovers that this Rorschach is not Walter Kovacs, but a successor. Erika refuses to assist him unless they also release her husband Marcos Maez, also known as the Mime.