5 stars and one of my favorites. This was an amazing act of writing by Sam Dann, who normally writes somewhat "vanilla" episodes for Mystery Theater. "The Only Blood" is definitely Dann's best episode during Mystery Theater's first year. Also, Robert Dryden's voice is so low and, for lack of better words, made for radio. He is almost too much voice; very little acting. But the script and direction were perfect. Great episode even for first time listeners.