Paramedic Abi Quinn is hailed as a hero by the patients she saves with the London Ambulance Service, but a secret she’s kept since she was a teenager now threatens to shatter that perfect illusion. When her daughter Rose goes missing while studying at Brighton University, and ghosts from her past return to haunt her, Abi’s caught in a race against time to untangle the web of lies she set in motion over 20 years ago.