Travelling football fanatic Giles Goodhead drags a series of unsuspecting friends and relatives to eight of the world's greatest derby games. From the noisiest (Barcelona) to the scariest (a toss-up between Istanbul and Glasgow) Us vs Them desribes the thrills of gate-crashing grudge matches in cities split by football. Eight unique trips add up to a highly entertaining commentary on football - and tribalism - around the world.