Walsmear's only reason for proving to himself that the fairies were real, was to assuage his conscience -- to convince himself that she died as a result of seeing fairies, as opposed to her committing suicide from guilt as a result of her having an affair with Walsmear. Castle's interest in the fairies, by this time, was purely self-serving; he fancied he had made an amazing discovery in the garden and prepared to take some photographs of the garden at night, using special lighting techniques. On _his_ way to the garden the next night, however, Castle once again ran into Paolo and Shorty, whom Walsmear hired to steal the photographs from the Templeton house. <sep>, Pronoun: his <sep>, A: Paolo <sep>, B: Walsmear