Nigel Tranter 
Drug on the Market 

A stealthy fishing-boat, blacked-out in the dead of night, and strange blinking lights on the shores of Aberlady Bay add up to a mystery that Lieutenant-Commander Philip Hepburn can’t ignore. Following a chance sighting of the elusive vessel while on shore-leave, and a violent encounter with some shady characters on the desolate salt-marsh, Philip is drawn into investigating the sinister goings-on in the bay. He and his newfound companion, feisty local girl Trisha Denholm, stumble across something neither of them expected to find and uncover a criminal conspiracy in sleepy East Lothian. ’One of Scotland’s most prolific and respected writers’ The Times