McGilloway's
debut novel was a crime thriller called
Borderlands.
Borderlands was shortlisted for a Crime Writers' Association Dagger award for a debut novel. In 2007 McGilloway signed with
Pan Macmillan to write three crime thrillers in his Inspector Devlin series. The sequel to
Borderlands,
Gallows Lane, was published in April 2008. His 2020 novel,
The Last Crossing, was nominated in the 2021
Theakston's Old Peculier Crime Novel of the Year Award. ==Published books==