Jeotaegeun Bomeul Gidarinda

Story

I will reclaim the honor you trampled upon. After seven years of solitude, my unjust imprisonment has come to an end. April Lunos lost both her parents and her honor in her quest to punish her fiancé’s betrayal. Vowing revenge, she finally stepped out into the world only to face not freedom, but yet another false accusation. “We are arresting April Lunos as the suspect in the serial murders that have occurred over the past three years.” A serial murder case for someone who had been imprisoned?

Synopsis via AniList (English).