Eugene Archer of
The New York Times wrote that "Walt Disney has come up with one of his best children's pictures", stating that Tewksbury's direction "makes all the difference. He has kept the kiddies from gushing too coyly, suppressed the mugging of a comic trio of thieves, photographed the fresh Berlin setting in effective color, and juxtaposed suspense and wit with a nice, bouncing pace."
Variety called the film "an interesting project" with "the customary distinguishable Disney mark to give it class", but without the same appeal to adults as "say, Disney's previous moppet classic, '
Mary Poppins'". Philip K. Scheuer of the
Los Angeles Times wrote that the film "falls somewhere between the moppet trade and not-too-discriminating adults".
The Monthly Film Bulletin found it "pleasantly presented, if without any distinction". ==Comic book adaption==