Brasilia "Brass" Doran is an agent with the Federal Bureau of Investigation's Behavioral Analysis Unit. She specializes in icon identification and symbology.
In early 1995, she was assigned to the Poet task force.
In January of 2001, Doran received a call from former FBI profiler Terry McCaleb requesting the iconographic meaning of owls in connection with the murder of Edward Gunn. Her information began to lead McCaleb to suspect Harry Bosch.
In April of 2004, Doran video-conferenced with agents Randal Alpert, Cherie Dei, Rachel Walling and several others when ten Poet victims were discovered at a burial sit in the Mojave Desert. Her primary duties on the case were the collating of information and acting as liaison to the National Lab.