"Forget Wally: it's eyes peeled for illusive art phenomenon Andy Warhol, who is hiding inside some of the world's greatest art scenes. Look out for the likes of Madonna, John and Yoko - and, er, Vladimir Putin - as Warhol travels back through time and popular culture" Smallish "As well as spotting Warhol in the throng on each of the 12 double-page spreads, it's thought-provoking and unexpectedly educational to discover figures...