Both Maura Tierney and Mekhi Phifer look a lot happier BTS than they did as their characters in "Greater Good" on January 23! Of course, Phifer's character didn't really have anything to smile ...

On Jan. 23, the newest episode of the procedural will feature Maura Tierney, who assumed the role of the squad's newest lieutenant when season 24 kicked off in the fall. Tierney joined the cast of ...