The Sixth Doctor and Davros are just a fantastic match for each other. This is the third meeting I've heard on audio and all three have been great stories. Terry Molloy is such a good actor, and infuses Davros with the right amount of evil and morals. Davros stands as the definitive work on the character, but this is another excellent showing. (A tiny note on the Davros redesign controversy - the Doctor does say once you see how hideous Davros is on the outside Mel will realize he's evil...not ideal).

Mel features prominently here as she is given a love interest and also gets to put her computer programming skills to work. Davros has stumbled upon Mechanoids and is putting dead human parts in them to create the titular Juggernauts. He's also disguised himself as a doddering professor. Mel is so horrified at him by the end of the story she leaves the Mechanoids to kill him, but naturally Davros survives (only to self-destruct even though we know he survives - weird call).

All around great and fun performances and character development for largely Mel and a bit for Davros too. Good stuff!