On a second listen, this is a bit of a letdown. The growing pains of the Tenth Doctor adventures is that this maybe could have worked on television but in the audio format, it reads as pretty bland. I love the Ice Warriors but nothing was done to identify them beyond their one note quest for titular vengeance. Billie and David do a decent enough job and Briggs hisses in a menacing enough fashion. With the talent on hand, I expected more!