¿Cómo contribuye la noción de lealtad a la novela? Analízala en referencia a Utterson, Lanyon y el doctor Jekyll. Tras un análisis detallado, ¿ayuda la lealtad a prevenir la violencia y la tragedia, o en cambio contribuye a ellas?

Lanyon disapproved of Jekyll's work and abandoned their friendship because of that disapproval. He stood by his ethical beliefs.

Utterson stood by Jekyll hoping to make a difference. His loyalty and freindship did not alter Jekyll/Hyde's course.

The last part of your question calls for your opinion.