'Law & Order' Sets David Ajala as Series Regular for Season 25

David Ajala has been tapped to join "Law & Order" Season 25 as a series regular, TheWrap has learned. The milestone season premieres Thursday with Ajala starring as a detective serving the unit alongside Reid Scott's Det. Vincent Riley. The actor's arrival comes after Mehcad Brooks, who played Det. Jalen Shaw, departed the show after three seasons. It is still unclear whether Brooks' exit will be explained on- or off-camera. The rest of the main "Law & Order" team is set to return for the 25th season, including Tony Goldwyn and Scott, whose contracts were also up for renewal this . . .