While on a trip to visit her grandfather, an attractive mother and two of her children mysteriously disappear. This leads to a desperate search to find them before it's too late.
Matt learns the shocking news that his missing wife, Leanne, is pregnant while attending a press conference organized by press officer Defne Topcu; Hazel is suspicious that her son Kyle may have been involved with the abduction and makes a call to the police; a major breakthrough happens when the flower seller is located.
Following the 28-day police review Barclay has turned Leanne's missing persons case in a murder investigation and Kyle Betts is the prime suspect; Matt spends his birthday in the company of Sarah, much to the displeasure of Leanne's parents; Farnes and Matt also discover that that Leanne bought a one-way airplane ticket to France, where her ex-husband lives, days before her disappearance.
With the investigation in it’s fourth week, Matt become further estranged from Leanne’s parents in part because he gives an interview with a TV crew and also because of the constant presence of Sarah Wheeler in his life. Tanya and her estranged father attend a local fair which ends with a grisly discovery.
The discovery of a burnt out van offers some new evidence to Barclay's investigation, as the suspect slips away; Matt joins Gary with the police, in a stakeout at the home of Hazel Betts; Amy celebrates her retirement with a party at a pub; several new clues bring Barclay and his team close to solving the case.
Hugh Bonneville
DSI Iain Barclay
Patrick Malahide
John Poole
Penelope Wilton
Barbara Poole
Edward Woodward
Vic Marsham
David Oyelowo
Matt Wellings
Sarah Smart
Sarah Wheeler
Richard Harrington
Daf Parry
Charlie Creed-Miles
DC Stephen Beam
Janet McTeer
DS Amy Foster
Christine Tremarco
Leanne Wellings
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