Halley B. Lewis is an attorney living in Tallahasee, FL. He was in the Navy during the Viet Nam War and met Dominick Santanello during boot camp and training in San Diego. Halley could not swim but needed to pass a swimming test in order to stay in the Navy. Santanello saved him by putting on Lewis's uniform and taking the test for him. Halley knew about Santanello's romantic relationship with a girl named Gabriela. He knew they met often in Chicano Park where she worked on the murals. In October 2016 Lewis was contacted by Harry Bosch who was seeking information about Santanello. He provided information that helped Bosch locate Gabriela Lida in San Diego.