<p>Britain 1941.&nbsp;Still reeling from the greatest loss of his life, the Reverend Major Clement Wisdom is called on again to serve his nation in its time of need.&nbsp;Under the cover of taking up a new parish in far northern Scotland, Clement is sent to the remote village of Huna, in Caithness, to locate a possible enemy agent who is sending out encrypted radio messages. Arriving in the depths of winter, Clement quickly finds it isn't only the temperature that is unnervingly cold.&nbsp;Perched on the edge of Great Britain, the isolated community is wary of strangers.&nbsp;Struggling to gain trust from the locals and where even his assigned government contact, the local postmistress is antagonistic, he becomes entangled in a web of silence. When the husband of his contact is found dead, the body horrifically impaled on a shard of window glass, Clement is at first unsure if it is an unfortunate accident, or a gruesome warning. As more deaths are uncovered, Clement realises he is facing not only an enemy spy but a ruthless killer.&nbsp;With limited time, Clement must act quickly, and if necessary, alone.</p>