In rural Devon, six-year-old Joanna Mason witnesses an appalling crime. Thirty years later, the man convicted of the crime is released from prison. In Edinburgh, 16-year-old Reggie works as a nanny for a G.P. But Dr Hunter has gone missing, and Reggie seems to be the only person who is worried.
Across town, Detective Chief Inspector Louise Monroe is also looking for a missing person, unaware that hurtling towards her is an old friend - Jackson Brodie - himself on a journey that becomes fatally interrupted.