1. Friday -- The Father

Series premiere. After Londoner Sam rescues a young girl in the woods, he takes her home to the mysterious Osea Island.

2. Saturday -- The Son

In his quest to learn more about the islanders' beliefs, Sam has a series of haunting encounters.

3. Sunday -- The Ghost

Sam discovers the truth about his connection to Osea Island and fights to escape.

4. Monday -- The Mother

Helen brings her two daughters to Osea, but their trip takes an ominous turn while the family looks for a place to stay.

5. Tuesday -- The Daughter

Helen tends to a fateful birth and is questioned about her past, while a peculiar girl rouses Ellie's interest.

6. Last Day -- The Dark

Series finale. With a fractious battle for power brewing, Helen and her family find themselves trapped in the middle.