MILWAUKEE — There's no trial to prepare, no jury to persuade, no judge to hand down a sentence.

Wade Michael Page is dead, having shot himself in the head after killing six people at a Sikh temple outside Milwaukee. Although detectives have interviewed more than 100 people, combed through Page's email and recovered hundreds of pieces of evidence from his residences to the temple, their findings might never be presented in court.

They also might never learn what drove him to attack total strangers in a holy place.