A suspected serial killer has killed for the last time. Authorities say Israel Keyes, who was arrested and charged in the killing of an Alaskan barista, killed himself while in custody. Before committing suicide on Sunday, Keyes confessed to at least seven other slayings, according to the FBI field office in Anchorage, Alaska, which on Monday asked for the public's help with tracing Keyes' travels over the years in the hopes of identifying any additional victims...