Jump on board with Detective Chief Inspector Paul Cullen in his latest gripping mystery…

When Detective Paul Cullen is tasked with heading up security on the maiden voyage of a new luxury sleeper train heading to Scotland, he thinks his luck is in.

But it soon becomes apparent that there are dark secrets and even darker intentions among the train’s high-profile passengers.

Deadly intentions.



Deep Sleeper is the fourth novel in the Detective Paul Cullen mystery series.