I have fond memories of watching this as a child, but I thought my memories might be too rosy, so my expectations were not high as I got ready to re-watch this film. However, it was surprisingly entertaining throughout, except near the end, where I agree that the scene showing everybody trailing everybody else went on a little too long. You can tell the plot was taken from a novel - there are several funny lines, there is more telling detail, the bad guys are convincingly threatening (as others have said), and the characters are more three-dimensional than usual for a 1960s "family" movie. The teenage heroine (played by Hayley Mills) is resourceful and actually has a steady boyfriend(!), though of course she never kisses him, even at the drive-in! I also like the actress who plays the hostage - she *looks* like an older woman who might actually work at a bank - not like a Hollywood glamour girl! I haven't seen the 1997(?) remake, but I suspect it isn't as good as the original. All in all, an enjoyable movie for a Saturday night at home!