The police are putting all of their resources into finding a missing 8 year-old boy Dylan Nichols who disappeared after spending the day at an arcade. The arcade manager Michael Nash, gave Dylan and a young girl, Louise Armitage, a ride and dropped at the corner near their home. CCTV footage confirms that Nash dropped them off but Dylan apparently went to the chip shop. DCI Gill Murray is convinced the person responsible is someone Dylan met in the arcade. A registered sex offender, Ryan Varney, was in the arcade that day. When the Chief Constable calls in a review team, Gill finds herself working with her ex-husband. Turns out someone has assumed a false identity. Rachel has been working hard preparing for her sergeant's exam but is forced to postpone it after her brother Dominic has a car accident. Janet and Andy have resumed their affair now that she has split up with her husband.
—garykmcd