As the DA’s office attempts to solidify their case, shocking new details surface about Michael’s past that threaten to derail the defense.

After an unexpected homecoming, a critical discovery rocks the Peterson household. Michael’s fate hangs in the balance as the trial ends.

After a body with similar injuries to Kathleen’s turns up at the county morgue, Sophie continues her quest to uncover what really happened to Kathleen. Meanwhile, Martha decides to dig…

After navigating a possible retrial, a 73-year-old Michael confronts a life-changing decision. Meanwhile, Martha and Margaret each share long-buried truths, and Sophie comes to terms with a revelation.

While working on his defense, Michael considers an opportunity to tell his story in a documentary. Then, after learning shocking information about her stepfather, Caitlin wrestles with doubts.

Olivia’s sister, Rachel, visits; Walter, Peter and Olivia try to solve the murder of an esteemed epidemiologist, which may be linked to Olivia’s abduction.

When a strange parasite attaches itself to the internal organs of a dying FBI agent, Olivia suspects a connection to the Pattern; Peter and Walter tap into a dead man’s…