Baldwin's character, Capt. Steven Harris, is taking over for Capt. Capt. Donald Cragen (Dann Florek). Cragen was last seen in the Season 13 finale with a dead prostitute in his bed. Look for friction with between the new captain and the elite squad of detectives.
Paget Brewster will also guest star in the Season 14 premiere.
In other casting news ...
"Heroes" and "The Office" actor Jack Coleman will be stirring up trouble on "Castle." Coleman will play a Us senator who starts to have some conflict with Beckett. [TVLine]
Zoe Hart is getting a new friend on "Hart of Dixie." Golden Brooks, of "Girlfriends" fame, will recur as Ruby Jeffries during Season 2 of the CW series. [THR]