Brian Cox stars as McLevy with Siobhán Redmond as Jean Brash and Michael Perceval-Maxwell as Mulholland in this BBC Radio 4 full-cast dramatisation.
Inspired by the real-life memoirs of a Victorian Inspector in Scotland, James McLevy prowls the dark streets of 1860s Edinburgh bringing criminals to justice, with the assistance of Constable Mulholland.
In 'The Sea Change', the town fair's star attraction is a beautiful mermaid - but the detective realises something fishy is going on.
Written by David Ashton.