08E04 - The Wisdom of the Fool

A travelling "Convention of Merriment" fair of jesters, led by retired chief Inspector Sir Toby Dobson, is raising money for St. Mary's parish in Kembleford, home of Uncle Mirth. When generally discredited female doctor and euthanasia-practitioner Belmont stumbles into the fair and dies from an overdose herself, father Brown, Mrs McCarthy and Bunty investigate. They find the merry bunch is in fact a group of vigilantes, grieving loved-ones and devoted to 'righting wrong failures to convict' throughout the country. The group finds out, fears exposure and condemn the trio to be executed by Toby's shy son, Bunty's former school friend Fred, whose brother had been murdered.