Don't miss this!This the best oldie movie I have ever seen! The special effects, in crisp black and white, were flawless, not "hokey" like most action movies of the period. When I watch this movie I feel that I'm "there" - I love the big cars,the street scenes, machines, fire trucks, ambulances, ships, planes and the fashions!Donald Woods is as dashing a hero as Erroll Flynn and Kathyrn Adams is as sweet as your little sister. The bad guys are trying to kill them and steal the protype of the Air Forces military plane.There's a lot of fistfights, car chases, crashes, and we enjoy long displays of flying stunts (small propeller planes)in every segment of the serial. The characters are all very close, like a family and their is a constant light-heartedness and implied romances. Each part ends in a disaster (or "cliff-hanger" to keep your interest.