Murder on the Moorland

Kitt Hartley wakes to the news that a murder has been committed in Irendale, a village high on the wild Yorkshire moors where her boyfriend, DI Malcolm Halloran, lived with his ex-wife until she too, was murdered. The MO of the two crimes is identical, right down to the runic symbols carved into the victims' hands.

Unable to leave it to the local police to solve, Kitt and Halloran travel to Irendale, where a literary mystery awaits. A line of Anglo-Saxon poetry found on the victim leads to a hiding place, and another cryptic clue. What is the connection to the murder of Halloran's wife all those years ago?