More important than the interesting premise, is the Fantastic Performance by Martin Landau! If he did not win an award for this episode, he definitely should have! Performed during a time when T.V. acting was definitely stiff and predictable, Mr. Landau gave everything he had as a condemned killer on death row. The viewer can FEEL the character's fear. The tears were REAL. Every bit of body language helped give even more credence to this very real performance. Thank you, Mr. Landau!
The plot holds one's interest. Very cleverly thought out. This is why I watch each and every episode in the order they were released - they just keep getting better and better.