Those closest to Stephen Paddock described him as meticulous, calculating and sometimes cold, but none of them expected violence from the man, despite his growing stockpile of firearms.
His girlfriend, Marilou Danley, noticed strange behavior but thought the guns were just a hobby.
His nephews thought he was just “eccentric,” “wealthy” and “aloof.”
His brother Eric thought he was a “narcissist” who would not have cared about the people he killed.
The interviews they and other family members gave to authorities are summarized in the final investigation report released by the Metropolitan Police Department on Friday. The accounts provide the most detailed backstory yet for the man behind the Oct. 1 massacre.