British television drama series in which hard-working GP Mona Harcourt (Archie Panjabi) and her husband Guy Harcourt (Jack Davenport) are shaken by the news of Mona's brother Kareem (Navin Chowdhry) having been abducted while working for a medical charity in Pakistan. When things are already at rock bottom, a terrorist attack takes place in London and they discover that Mona's nephew Danny (Viveik Kalra) has absconded from his university accommodation without a trace. Mona and her family begin to question whether Danny's disappearance is connected to the terrorist attack when detectives begin to enquire as to his whereabouts, but is all as it seems?