While the ratings haven't been stellar nor dismal to the point where cancellation is imminent, changes are in order for NBC's 'Law & Order: Los Angeles,' starting with the replacements of key actors, including Skeet Ulrich, Megan Boone and Regina Hall.

According to Deadline.com, Ulrich was the first actor to be cast on the show, playing detective Rex Winters, while Hall plays ADA Evelyn Price, who works for ADA Morales (played by Alfred Molina); Boone plays DDA Lauren Stanton, who works under Joe Dekker (played by Terrence Howard).

Boone is exiting completely, while Hall may return for a couple of episodes. Before the series premiered, Wanda de Jesus left the show and was replaced by Rachel Ticotin.

Dick Wolfe, who runs the spinoff show as well as the other series, the now-canceled 'Law & Order,' 'Law & Order: Special Victims Unit' and 'Law & Order: Criminal Intent,' has tweaked the other shows during the first seasons, and just like those shows, the changes won't stop production on any 'LOLA' episodes. Right now, the series is on episode 12.

During the early seasons of 'SVU,' Michelle Hurd and Dean Winters were replaced and many actresses came in as the new Assistant District Attorney, including Paula Patton, who lasted one episode in 2010 before leaving the series to take on a role in the new 'Mission: Impossible' film with Tom Cruise.

On 'Criminal Intent,' Theresa Randle played Assistant District Attorney Patricia Kent, replacing Courtney B. Vance (after season 5) as the A.D.A. assigned to the Major Case Squad, but only appeared in two episodes. Over the years, the show had gone thru several leads, with Saffron Burrows, Jeff Goldblum, and Mary Elizabeth Mastrantonio starring in last season's show. With the final season set for this year on USA Network, original cast members Vincent D'Onofrio and Kathryn Erbe will return to the series as Detectives Robert Goren and Alexandra Eames, respectively.