Cathy MacDonald travels in the footsteps of Detective Fin MacLeod, the central character in Peter May's best-selling trilogy of novels - The Black House, The Lewis Man and The Chess Men. Her journey takes her from her native Lewis and south to the Isle of Eriskay. En route, she visits the locations and meets the real life characters who inspired Peter May in his writing of The Lewis Trilogy. The programme also features an interview with the author.