An American prison break drama is this week’s offering from the Cornley Drama Society, full of intrigue, excitement and double-cross. It’s also full of errors, as the cast struggle to escape from the set, their costumes and a phone box. There’s a bizarre talking bird, a flying system which operates at random and a prosthetic chin with a life of its own. And Robert’s terrified niece Lucy makes her debut, with predictable disaster. It doesn’t help that none of the cast understand the plot.