As Harrow's wound heals, he stubbornly refuses to lay low and decides to return to work. When his one-night-stand turns out to be the new doctor at QIFM, the two team up to solve a mysterious case that appears to be the result of psychosis.
With his family reeling from Fern's arrest, Harrow is drawn into a new case that involves the death of two base jumpers who plummeted to their death from atop a skyscraper.
The discovery of mummified remains inside a suburban house sends Harrow and Grace on the trail of an old case that has ties to one of their own.
Simon uncovers a secret related to Chester's death. Grace and Harrow investigate what appears to be a shark-related death that leads them to a hidden conspiracy.
As a tragic death leaves everyone reeling, Harrow's attempt to find a distraction in a new case raises more questions as he discovers a link between the case and Simon.
Harrow gets a glimpse into Fairley's past as the two investigate a case in the latter's hometown. Chester's brutality comes to the surface after Fern identifies the man who framed her.
As Fern takes the fall for Chester's crime, Harrow puts his focus into reexamining the events surrounding Chester's apparent death.
Harrow's life hangs in the balance as Chester plays mind games with him. Unaware of the peril around them, Grace puts her attention into the investigation of a mummified corpse found inside a sarcophagus.
Faced by disbelief and worry when he insists that Chester is alive, Harrow scrambles to find evidence to prove to everyone else that he is still in his right mind.
Things come to a head as Chester makes his final play, leading to a confrontation that leaves Harrow and Fern in peril.