Gudoon Hersi, left, and Silje Limstrand, who were neighbors of Espen Andersen Brathen, who has confessed to killing five people with weapons including a boy and arrow, in the Kirkegata area of Kongsberg, Norway, Oct. 14, 2021. The police, initially pointing to Islamic extremism, now say the attacker was "not well, mentally." (Andrea Gjestvang/The New York Times)