<p>An off-duty detective gunned down. A dead woman. A missing student. And now, a former policeman in search of his past. Dead or alive, something connects these people, and it's up to D.I. Carl Sant to discover&nbsp;what it is.</p><p>A series of cold-case inquiries leads D.I. Sant and his colleagues to investigate a botched assassination plot dating back to the 1980s. The deeper they dig, the more secrets are revealed, including shocking connections to the infamous National Front.&nbsp;</p><p>Meanwhile, the memory of former P.C. Tanner,&nbsp;survivor of&nbsp;the assassination, is recovering. Sant must find Tanner and figure out who is behind it all, before his superiors lose their rag and more lives are lost.</p>