血字的研究揭示了人与情感、记忆之间深刻而复杂的关系，令人深思。佐野俊英本子

　　A corpse is found in an empty house with the word 'Rache' scrawled on the wall next to it. The police arrest a suspect but then a similar murder occurs, proving that they have the wrong man. In exposing the real killer Holmes uncovers a feud stretching back to Salt Lake City and the Morman community.