Deep Sleeper is about to depart...

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.

Jump on board with DCI Paul Cullen of the British Transport Police in a series of gripping mysteries, perfect for fans of LJ Ross, Rachel Abbott, Peter James and Harlan Coben. Cullen is a dedicated and determined officer, loyal to his colleagues and close to his family. Spearheading the investigation of high profile crimes across the UK’s transport network, Cullen is a man you want on your side when things go wrong.

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