Filmed in Cinerama and Technicolor, Circus World may have drawn the crowds for various reasons – not the least, perhaps, for the big names. John Wayne stars as circus owner Matt Masters, who takes his show to Europe hoping to save it from financial ruin. Accompanying Matt, is young Toni (Claudia Cardinale), whom Matt had raised since her aerialist mother Lili (Rita Hayworth) left them years before.