Series 1

A young woman named Marina sets fire to an abandoned car on a street and photographs it as flames engulf it. Boyd, a passerby, intervenes, tackling her to the ground to shield her from any potential explosion. He later learns that Marina's father died in a car crash at that very spot a few years earlier, and Marina refuses to accept that his death was an accident. Although not officially a cold case, Boyd is intrigued and reluctantly agrees to investigate. Frankie runs forensic tests on Marina's father's car and proves that he was still alive after the crash and could have escaped. The answers they uncover may mean that the danger to Marina is much greater than any of them had suspected.