Starting at the end, with a prime suspect caught, the series moves backwards in time through the string of gruesome murders, gradually unraveling the truth. Enigmatic, unrelenting and charismatic, we follow DCI Gabriel Markham as he is propelled in an obsessive hunt for a serial killer who left a mark on him both physically and mentally. As the clock ticks back, and Gabriel's personal and professional lives unfurl, we explore the painful psychology of a man disfigured, while the shock waves from the crime ripple out in reverse. Alongside a thrilling chase to catch a brutal killer, Rellik explores the very nature of motivation, as we delve deeper into the past to uncover the events that shape a person into who they will become.

Explore what it will be like to be human one million years into the future. Today’s brightest futurists, scientists, scholars and notable science fiction writers guide viewers through the very latest advances in technology, ideas and innovations that likely will power the evolution of our species.