This law allowed police more latitude in taking DNA samples from convicted sex offenders.[36] Alexander Christopher Ewing "Hammer Murders" of the Bennett family Aurora, Colorado, USA 1984-01-16 2018-07-10 In addition to the murders of Bruce, Patricia and Melissa Bennett and the attempted murder of Vanessa Bennet, the then-unidentified killer's DNA was linked to the rape-murder of 50-year-old Patricia Smith in Lakewood six days earlier.