When 8-year-old April Tinsley is found dead in a Fort Wayne, Indiana ditch the community is shaken. Disturbing letters then appear, penned by her killer, targeting other young girls. Police scramble to catch April's murderer before he strikes again.

When 37-year-old Lee Rotatori is found dead in her hotel room in 1982 with a single stab wound to the heart, police suspect the work of a professional. It will take four decades to identify her killer and, in the process, reveal a shocking truth.