London, March 2018. When 34-year-old Laureline Garcia-Bertaux fails to turn up for work, a missing persons inquiry rapidly becomes a murder investigation. Police attending her apartment find her dogs alone. Later, her body is found in a shallow grave in her back garden. As detectives investigate who might be responsible, her ex-boyfriend, pathological liar Kirill Belorusov, quickly becomes their prime suspect after CCTV shows him buying materials similar to those used in Laureline's murder. When he flees the country for his native Estonia, police must navigate European law to bring him back to the UK to face justice