The plot is centered around a young baby being kidnapped and the parents David Knight and Julia Arnall plus Detective David Farrar's efforts to find the missing infant. Knight is the token American that seemed to be the staple of any British film of that time, you just gotta have a Yank in this Rank. Julia Arnall is a stunner; a German model signed by Rank but unfortunately not the best of actresses her contract didn't last long. A shame because with her looks she was almost in the Grace Kelly class. The tension builds nicely and there is a virtual parade of character actors and actresses that appeared in so many British films of the period. I was a boy of 11 when this film was made and it adds to the enjoyment to see cars, trucks and buses of that time in colour instead of the usual black and white.