Kathryn Hahn and has been set to join Ben Stiller and Kristin Wiig in 20th Century Fox’s remake of The Secret Life of Walter Mitty and The Good Wife‘s Josh Charles is signing on as well. Hahn, who starred in Step Brothers and Our Idiot Brother, plays Odessa, Stiller’s character’s sister. Charles will play Phil Melhoff, the ex-husband of Cheryl (Wiig). Stiller is directing. Hahn, who most recently starred in Wanderlust, is repped by Gersh and Brillstein. Charles is repped by WME.