According to SundanceTV, Robin returns to Sydney to rebuild her life in season two. She gets wrapped up in another horrific crime when a young girl's body washes up on the shores of Bondi Beach. That's just the beginning of the new twisted story that "takes her into the city's criminal underbelly and closer than she could have imagined to the secrets of her own heart."
The trailer also shows that Robin meets the daughter she gave up, and the girl's adopted mother (Nicole Kidman). Somehow, her daughter's creepy boyfriend is involved in the murder.