Sex offender suspected in 1970 Wis. child murder - Article Photos 2/8

This 1967 photo provided by the family shows Donna Willing, center, with her sisters Barb and Virginia. Donna was raped and strangled in 1970. Police have identified Donna Willing's childhood neighbor as the alleged killer: 73-year-old Robert Hill. He’s been in prison for other sexual assaults of children. The biological evidence in Donna Willing’s case was lost or destroyed, and prosecutors are using Wisconsin's sex offender law to possibly keep him in custody indefinitely. They hope to prove Hill is a sexually violent person during a Monday, Nov. 19, 2012 hearing. (AP Photo/Family Photo via Milwaukee Journal-Sentinel)