When everyone is sleeping, he comes into their houses. He takes one thing. A photo of their child. A sinister thief on a power trip or something even darker and more sinister? Detectives Jackman and Evans find themselves on the hunt for a highly unusual burglar who seemingly only steals photographs. But then, late one night, an elderly woman falls to her death after seeing someone in her home. Did she really fall, or was she murdered? And just how many mysterious intruders are there on the Fens? With the body count rising, Jackman and Evans have their work cut out for them to track down the night thief - before it’s too late.