Pietro Braun was the killer of Naturalist Grant Hughes, in Electric Love (Case #31 of Rising Shadow).

Pietro is an Artificial Intelligence made by the Creator of Nullville modelled after Benjamin Jameson's deceased father, at the climax of the investigation he was revealed to have killed Grant.

Pietro revealed that Grant was an "intruder" on Nullville and that he was programmed to erase intruders, before he could reveal anymore he was deactivated by Benjamin.

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