It was the first audio story featuring Sylvester McCoy as the Seventh Doctor and Sophie Aldred as Ace. It was also the first time the two actors had been back together playing these parts since 1993's Dimensions in Time. Written by Jonathan Blum, this story continues Ace's continuity developed in other mediums such as her surname where here, like in the Virgin New Adventures novel Set Piece, it is stated to be McShane.