World premiere of a new murder mystery starring Arthur Bostrom ('Allo 'Allo!) set in the golden age of BBC sitcoms, from the acclaimed Father Brown writer David Semple. A supporting artist's job is to be invisible, inscrutable, and not to pull focus from the stars... and Jamie Button does his best to follow these rules, until he witnesses a murder on the set of a popular sitcom. Extra turns detective, stepping into the limelight. As events unravel and the culprit fears detection by this amateur sleuth, could it be that Jamie has spoken his last 'rhubarb'?