December 16, 2011 7:16 pm Well-Known Philadelphia Detective Retires Philadelphia Homicide Detective Aaron Booker is retiring. Booker has helped solve some of Philadelphia’s biggest murder crimes. US & World Videos 1:22 Video shows man walk up to ring doorbell with an apparent gun, police say 2:27 76ers team owners bought tickets to pack the Wells Fargo Center with Sixers fans 1:28 Neumann University students help Delco law enforcement to investigate crime cases 0:55 Former nursing home repurposed as new triage center for homelessness and addiction 1:40 Center City report says 70% of non-resident workers have returned to the office in Philadelphia