Cambridge is sweltering, during an unusually hot summer. To Jackson Brodie, former police inspector turned private investigator, the world consists of one accounting sheet - Lost on the left, Found on the right - and the two never seem to balance.

Surrounded by death, intrigue and misfortune, his own life haunted by a family tragedy, Jackson attempts to unravel three disparate case histories and begins to realise that in spite of apparent diversity, everything is connected...