Dick Sutton is a homicide detective for the Los Angeles County Sheriff's Department. His partner as of 2015 is Gil Contreras. In April of 2015 Sutton and Contreras were assigned to investigate the double murder of the Nguyen brothers at their jewelry shop. The investigators found Harry Bosch's card in the store, and Sutton called Harry to ask him to come in and tell what he knew. Sutton also invited detectives Cornell and Schmidt to sit in. Bosch asked Mickey Haller to come with him. Sutton tried to make the meeting informal and non-accusatory because he was somewhat familiar with Bosch and did not consider him a suspect. It did not go that way because of the presence of the other detectives and Haller, so Sutton got little useful information from the interview.