“Cole & Hitch” is a gritty crime fiction series by Robert B. Parker, known for its dark humor and cynical protagonist, Sid "Cole" Cole, a former Boston cop. The books follow Cole and his new partner, the fiercely independent and perceptive Beatrice “Hitch” Hitch, as they navigate the morally ambiguous world of private investigation in Boston. Parker's distinctive style blends hard-boiled detective work with sharp dialogue and a surprisingly empathetic exploration of flawed characters.