The Cold Case Files will leave you shocked that so many of Ireland's evil killers have not been caught. But by outlining the on-going work of Ireland's cold-case detectives, this book will also give you hope that these killers will never be allowed to rest easy, and that one day justice will come knocking on their door.

Unsolved: the 1981 fatal shooting of Lorcan O'Byrne, who was targeted by robbers on the night he was celebrating his engagement.

Unsolved: the murder of Grace Livingstone, who was found shot dead in her Malahide home in 1992.

Unsolved: the abduction and suspected murder of Brooke Pickard, who was last seen in Co. Kerry in 1991.

Cummins also charts the re-investigation into the first case to be solved by the Cold Case Unit: the killing and secret burial of Brian McGrath in Westmeath in 1987.