Hmmm....I would have condensed the first two acts into 5 minutes and added a couple flashback scenes. Maybe a prison break scene and a laser shootout. The doctor could have used a love interest. I guess what I'm saying is that this one was a bit boring.

This episode could have been more interestingly created if more details were given at the END of act 3. I completely agree with Philip M. The first two acts could have been shorn-up in 5 minutes leaving the rest of the episode to strengthen the plot. What you were left with is a big set up to one of the worst endings in Mystery Theater history. Anna was provocative and had some scrupals--Victoria Dann (the episode's writer) should have played up on that more effectively. In the end, "The Unregistered Aliens" was just a so-so listen worthy of just 3 stars.

Dr. Anna Quiller has set up her practice in the slum area in which she was born. “I’m needed here,” she says. The area is home for many unregistered aliens, and when one of them, dying from a bullet wound, is brought to her she neglects to report his death to the police. One reason for this is that after the boy died, the body disappeared. Dr. Quiller can’t figure out why or how this could have happened.

☆ An ok episode; the most interesting aspect is how little has changed re: illegal migrants since the 1970s