Afterwards Robert was wounded, whilst attempting to protect a note in his care his wife Katy along with officer Robert left city life. Susan Reynolds, the witness was shot. Robert was struggling with all the guilt he feels over the departure of Susan. In a bid to put the past behind them, Katy and Robert run a guesthouse, hidden away in the Lake District that is idyllic. A surprise guest ends up, DCI an friend, Mark Maxwell. He suggests that the guesthouse is perfectly positioned to use as a house, Robert is enticed but can Katy agree?