This Cybermen origin story from Big Finish is one of the best original audio dramas of the 117 or so released in the monthly series. In terms of character and mood it serves The Cybermen far better than TV ever could; the title alone immediately giving off vibes of physical and emotional mutilation, and the remorseless, emotionless purpose for which the silver giants from Mondas have become associated.
Peter Davison is on fine form; the youthful and naive appearance of his incarnation of the nomadic Time Lord masking a steely mindset and fierce intelligence, whilst Marc Platt's script crackles and fizzes with energy and panache.
This is a great entry in the monthly Doctor Who audio series, and I heartily recommend it for first-time Big Finish listeners as well as seasoned fans. The price on here is better than if you bought it direct from Big Finish, but their website offers 6 and 12 monthly subscriptions, so if you plan on listening to others in the range it's worth checking their website out before committing to buying this here.