Katherine Crawford and her parents are traveling through Arizona and stop for tea in a roadside cafe. (They're English.) Sleepy Katherine says she's going back to sleep in the car and wait for Mom and Dad. She gets into the wrong car! The car belongs to a couple of crooks and Katherine wakes up just in time to witness a murder, escape from the car, and find herself adrift in a small town across the Mexican border, pursued by the two murders, unable to speak Spanish, and -- well, I don't know, everything is just WRONG. Even the chili a kind lady gives her is "poco piquante." She meets a nice boy, Randy Boone, and he tries to help her get straight.
Katherine has no business being in the little village of La Cucaracha or whatever it is. If you can't stand the chili, get out of the cocina. Furthermore, how drowsy must you be to go to sleep in the back seat of someone else's car after mistaking it for your own? Any normal person would have to be stoned out of her mind.
On the other hand, Katherine Crawford, a blond teen ager, is cute enough in a thoroughly conventional way, and Michael Wilding and Anna Lee as the parents are accomplished actors. Randy Boone may be a splendid country singer. As an actor, he comes across as simple minded. He knows that they are being chased by two murderers as he drives Katherine to border, but he insists on pulling off the road to "think about it" and maybe have a little lunch. Not very bright.
Hitchcock was notoriously "mean", as the British put it, meaning he was tight with his pennies. The series as a whole always had a parched look. The rooms seemed barely furnished, the set dressing perfunctory. This episode is a bit more expansive. The Mexican village looks like a Hollywood version of a Mexican village, but it at least covers some territory and is colorful. Maybe it was a standing set, left over from some other production. I applaud it for getting us out of the usual middle-class kitchens.