S1, E4: As Grace (Rachel Griffiths) closes in on Corey Baxter (Ian Meadows), she makes a terrible discovery that could destroy her unlikely friendship with Charlie (Yoson An). As Grace (Rachel Griffiths) and Charlie (Yoson An) investigate their second murder in a week, they come to blows over which course to take. Despite all the physical evidence pointing to Corey Baxter (Ian Meadows) being involved, Grace can’t ignore her intuition. Something doesn’t add up and she’s not sure why. Meanwhile, Corey Baxter races towards the Queensland border, with Claire (Brooke Satchwell) and her son as hostages. Desperate to escape, Claire hatches a plan to bring Corey to his knees. Despite Charlie’s frustrations, Grace continues on her independent line of investigation, making a shocking discovery that Charlie refuses to hear. As word gets out Corey has held up a petrol station north of the city, Grace’s instinct speaks again, telling her it’s a decoy. With tension between them at an all-time high, Grace and Charlie go against orders and follow their gut. Will they finally go head-to-head with the killer who has eluded them for so long?