Three years after a horrific shark attack tore Zoe and Dan apart, the detectives are reunited to solve the murder of a woman who went missing years earlier, while a serial killer is lurking hidden in plain sight.
A horrific murder puts Zoe and Dan in a race against the clock to stop the killer striking again; Amber attempts to play matchmaker and puts Claire in Stephen's sights.
Zoe and Dan's investigation into the brutal murder of an affluent couple uncovers suspects all pointing fingers at one another; Stephen's big play triggers the launch of the serial murder Strike Force.
Zoe investigates the mysterious death of a young woman on the beach; The serial case is thrown into chaos when Pia's body turns up and all the evidence points to Dan.
