|Portrayed by||Kate McNeil|
|First appearance||The Thin Red Line|
|Last appearance||The Thin Red Line|
|Family|| Dale Blakely (husband)|
Sam Blakely (son)
Katherine Blakely appears in The Thin Red Line. She is the wife of Dale Blakely and also the mother of Sam Blakely, the murderer of Joseph Purcell and Patrice Madigan, the daughter of her husband with another woman. She and Dale later end up taking in Patrice's daughter, Kaylee, after Patrick Jane gives her to them, giving her and Dale a fresh start at a family.