"How well do you know your wife, Mr Crookham?" Peter Crookham is delayed in traffic on his way home to dinner with his wife, Mariana, and his journalist brother, Andy. He arrives back to a bloodbath: his brother is dead - covered in knife wounds - and his wife, in a near-catatonic state, is bathed in blood. Convinced Mariana is incapable of murder, Peter vows to discover what happened and clear her name. Interleaved with Peter's story is that of a man present in East Germany in the late 1970s. This elusive, nefarious figure appears to be the connection, the piece of the jigsaw to put everything in place - a man who it seems was affiliated with the STASI. But this man, Peter will discover, is more than that. Much more. And so is Mariana Crookham.