In this episode, Paul Martin visits the Watts Gallery in the heart of the Surrey countryside, where experts David Harper and Thomas Plant are on hand to find a selection of objects to take to auction. David uncovers a collection of British film and TV memorabilia and Thomas is thrilled by some French cameo glass. Paul Martin is on the trail of Martians in Woking, the setting for HG Wells's sci-fi novel The War of the Worlds.