After decades of no contact, the “Happy Face Killer” and his daughter are begrudgingly reunited, in order for her to find out if an innocent man is going to be put to death for a crime he committed.

Melissa and Ivy head to Texas to delve into the mysterious murder of Heather Richmond.

Melissa navigates the highs and lows of going public with her story. The team question Elijah's innocence as Keith gets thrown into solitary.

Melissa reconnects with her brother and confronts her father, who finally offers a clue about the case. Hazel receives an unexpected invitation.