The Night Watch

Neil Lancaster, HQ Digital, £14.49

P.S. knows a good thing when it hears it and this audio from Highland-based Lancaster, lasting over 10-a-half-hours, is about as gripping as it gets. A lawyer on honeymoon is found dead on a clifftop in northernmost Scotland, the latest in several suspicious deaths, one of which was his last client. DS Max Craigie suspects a vigilante serial killer – but this one is part of the investigation team. Lancaster was nominated for the William McIlvanney Prize for Best Scottish Crime book last year, and this doesn’t disappoint.