 He was formerly an operative of the Pinkerton Detective Agency, speaks fluent Chinese, and is skilled with hand-to-hand combat.Finch came to Silver City to investigate a murder committed in a private railway car at the Silver City rail depot.To avoid reassignment to a strike breaking detail, he resigned from the agency and remained in Silver City, where he uses his knowledge of fingerprinting, ballistics, photography, chemistry and scientific analysis to aid Marshal Stone in his investigations.