Loic Wedden, a friend of Donovan has a problem. His daughter Áine has disappeared. He believes she is with friends, likely visiting art galleries in London.
Áine’s secret, however, is that she is on a mission to steal Irish artefacts from England and return them to their homeland: Ireland. Things change in the midst of the first theft, and now Áine is Lost in London.
Donovan must extricate her, while avoiding placing her friends in peril. The crimes begin to mount up, and he begins to suspect that all of the friends are indeed lost. The mess becomes more complicated, and an attempt at a rescue could force a choice between saving Áine, or saving her friends.