Some years ago I saw the documentary Trekkies. It showcased the sometime scary extremes that Star Trek fans will go to in pursuit of their hobby. Ringers is similar in its celebration of Tolkien's fans but with a far more loving approach to the people it discusses.

Vengeance on Varos has a lot going for it: the introduction of Sil (Nabil Shabin), the Colin Baker era’s most popular villain, and an interesting story about televised violence, with viewers eagerly tuning in to watch the suffering of others… long before our current trend of reality television. Despite its potential, this Who outing falls a little short. Some lacklustre performances and unconvincing situations leave it sitting in the “could-have-been-great-if…” pile.

This is Peter Davison's farewell story, with Colin Baker taking over the role in the closing seconds. Well paced and intelligently written, it is, however, hampered by some poor effects (including a laughable man-in-a-rubber-suit monster) and the occasional below-par performance. But the good points outweigh the bad, making this a worthwhile example of the Davison era.

The Doctor, Jamie and Victoria arrive on the planet Telos, where an archaeological expedition from Earth is trying to discover why the Cyberman race has died out. With the Doctor's help the team gains access to the underground tombs where the Cybermen lie frozen. But all is not what it seems - some of the team members have an ulterior motive for being there and the Cybermen themselves are not dead, only dormant, waiting to be re-awakened... which, of course, they are.