The six-part series sees the return of Jeff Pope to ITV after the success of Little Boy Blue in 2017 and also stars This Country's Charlie Cooper and Happy Valley's Siobhan Finneran.
A Confession tells the story of how Detective Superintendent Steve Fulcher, played by Martin Freeman, deliberately breached police procedure and protocol to catch a killer, a decision that ultimately cost him his career and reputation.
Set in Swindon, Wiltshire, A Confession, details the disappearance of 22-year-old Sian O’Callaghan in March 2011. On a night out with girlfriends, Sian left a nightclub in Swindon Old Town to walk the 15 minutes home to boyfriend Kevin Reape, played by Charlie Cooper. Worried for her safety, Kevin reports Sian missing when she fails to come home in the early hours or respond to his increasingly frantic texts.
With the police investigation underway, officers arrive on the doorstep of Sian’s mother, Elaine O’Callaghan, played by Siobhan Finneran, who at first thinks her daughter must have stayed overnight with a girlfriend. Described as a ‘family girl’, it was uncharacteristic of Sian to be out of touch with her loved ones.
Senior Investigating Officer Steve Fulcher leads a team which begins to piece together Sian’s last movements, scouring CCTV footage from the club and re-tracing her steps home. Cell-site analysis reveals her mobile phone signal bouncing off a mast 14 miles away in Savernake Forest. With the missing person’s enquiry in full swing Fulcher, orders a full-scale search operation.
Believing Sian may still be alive, Fulcher operates on the premise that Sian is being held somewhere against her will. If she is, he knows it will be a race against time. Through diligent and painstaking police work Fulcher and his team discovers CCTV footage of her in the High Street, which leads to vital clues in the investigation.
Meanwhile, Karen Edwards, played by Imelda Staunton, the mother of Becky Godden, a 20-year-old who disappeared a decade previously in 2003, is watching the investigation unfold on the local news and in the town centre. Reminded of Becky’s disappearance, she becomes gripped by fear that her daughter will somehow be involved in what is unfolding before her eyes as the search for Sian goes on.
A known drug addict and prostitute, Becky had disappeared many times before and although Karen had tried to help her daughter, staging interventions and paying for rehabilitation, sadly Becky continued to lapse back into addiction.
Coincidentally, the property where Karen lives with her second husband, Charlie, backs on to the home of Elaine O’Callaghan and her then partner. Although they don’t know one another, their lives become tragically intertwined when Fulcher and his team edge closer to their chief suspect, local taxi driver Christopher Halliwell, played by Joe Absolom.
The investigation culminates in a standoff between Fulcher and Halliwell at a remote location, before Halliwell is taken back to the police station and given a solicitor. Just as Fulcher is about to give up, Halliwell suddenly makes a startling confession. But this moment of apparent triumph takes on sinister consequences and steers the investigation in a completely unforeseen direction.
Speaking about the new series, Jeff Pope said “I found this is a fascinating story to tell on a number of levels. On one hand it is a brilliant piece of detective work, but in order to find both girls Fulcher felt he had to deny Halliwell his rights as a suspect. It brings into question how we want our police to behave when someone goes missing.
Should Fulcher have been praised as a courageous officer fighting for the life of a girl, or lose his career for riding rough shod over the law?”
A Confession will air in 2019 on ITV