Christina Trevanion presents from Brighton Racecourse, with experts Catherine Southon and Mark Stacey helping the teams. Charlie Ross also visits the National Horseracing Museum.

Roo Irvine and Tim Weeks help the red and blue teams in Sawbridgeworth, Hertfordshire, where they hope to bag bargains to take to auction to sell at a profit. Presenter Charlie Rossalso finds out about the fascinating world of espionage and uncovers some everyday objects that aren't quite what they seem.