The Ultimate Treasure by Christopher Bulis

The Ultimate Treasure is a Doctor Who novel featuring the fifth Doctor and has been written by Christopher Bulis.

A shopping trip for the Doctor and Peri turns sour when the become embroiled in a mysterious transaction involving the sale of co-ordinates leading to Rovan's hoard - the ultimate treasure.

The Doctor and Peri join the quest, but the Time Lord remains sceptical. What will they find - and why has it remained undiscovered for so long?

The resourcefulness of the travellers is tested to the limits as they each race to be the first to the treasure. And among a seemingly endless array of tricks, tests and traps lurk some deadly surprises.