This movie just got more and more ridiculous.
The part that really wound me up is when they track the British couple to the church where they suspect their son is being held. So what do they do? They sit in back quietly waiting to be seen? WTF? Why? Then, after they have been seen, Doris pops outside to call the cops? Really? Because every other opportunity they had to tell the cops they inexplicably decided against it.
So, then everyone gets shown out of the church and Stewart sits quietly waiting for them to leave and lock him in with them alone? Oh good that's helpful. Why not call the cops immediately after having found them instead of watching the fcking service and waiting patiently to be seen? Or if they are so adamant that their son will be in danger if they tell the cops and think that their son is in the building, why not sneak around back and look for him instead of passively waiting to be rumbled for no reason at all? Seriously what the hell?
Not to mention the silliness of the whole assassination plot and the the foiled by screaming ending. I know this movie was made in the 50s and a lot has changed since then, but logic isn't one of them. The behaviour of the couple in this movie is implausible at best.
What if a squirrel wants a sausage?