chunk: It is revealed that after Annie becomes ill in 1851, Darwin takes her to the Worcestershire town of Malvern for James Manby Gully's water cure therapy, against Emma's will. Annie's condition worsens, and she ultimately dies after her father, at her request, tells her Jenny's story once more. Darwin is devastated, and her death sharpens his conviction that natural laws have nothing to do with divine intervention. To his contemporaries, this is an idea so dangerous it seems to threaten the existence of God. In a box in Darwin's study, we discover the notes and observations that will become On the Origin of Species.
  Having read his 230-page synopsis, Darwin's friends in the scientific community, Joseph Dalton Hooker and Thomas Henry Huxley, also encourage him. Huxley admiringly tells Darwin that with his theory he has "killed God", which fills Darwin with dread. In his hallucinations, he also feels that Annie disapproves of his procrastination.