"I am Thomas - a brutal comedy with songs", created by "Told by an Idiot", the composer Iain Johnstone and poet Simon Armitage is now on tour.
It tells the tale of Thomas Aikenhead - the last person to be executed in Britain for blasphemy.
Amongst other statements overheard, he denied the Trinity and was reported, tried, sentenced to death and publicly hanged. He is remembered as one of the Unitarian martyrs.
It provides a salutary tale when freedom of speech is still challenged in so many parts of the world and blasphemy remains a crime.
I have not seen it yet but hope to do so when it comes to London in late April at Wilton's Music Hall.