Die drei ??? - Plan der Chamäleonbande

A wave of sophisticated robberies is keeping the whole country on tenterhooks. The well-camouflaged "Chameleon Gang" is said to be behind it. Strangely enough, the places and times of the burglaries coincide with the tour schedule of a popular singing duo. Are the musicians behind the crimes? Bob goes along on tour and investigates undercover. But where are Justus and Peter? Can the three investigators prevent the robbers' big coup and convict the gang? Investigate in an exciting case between Rocky Beach, the Californian wine-growing region and San Francisco.