A look at how entertainment partnerships have succumbed to the pressure of being in the spotlight, including the likes of Cannon and Ball, Simon and Garfunkel, David Baddiel and Rob Newman, and Kim Woodburn and Aggie MacKenzie. Drawing on archive, first-person testimonies and interviews with performers' friends, peers and fellow industry professionals, this programme looks at how some of the biggest and most popular double acts failed to last the course.