He finds out from Mitchison's work mates that he had been interested in ecology, and that a close friend has gone missing.
hiː fˈaɪndz ˈaʊt fɹʌm mˈɪtʃɪsənz wˈɜːk mˈeɪts ðæt hiː hɐdbɪn ˈɪntɹɛstᵻd ɪn ɛkˈɑːlədʒi, ænd ðˌæɾə klˈoʊs fɹˈɛnd hɐz ɡɔn mˈɪsɪŋ.