The hugely powerful Key to Time has been split into six segments, all of which have been disguised and hidden throughout time and space. Now the even more powerful White Guardian wants the Doctor to find the pieces.

The Doctor, Romana and K-9 have traced the second segment of the Key to the planet Caulufrax. But when they arrive at exactly the right point in space, they find themselves on exactly the wrong planet - Zanak.

Zanak is a happy and prosperous planet. Mostly. Ruled from the Bridge by the mysterious 'Captain', it's just one New Golden Age after the next, raining gems and minerals for everyone. It's an economic miracle - so obviously something's very wrong.

Leaving on Translink bookshelf