John Scott Shepherd returns to Paradigm; Alexandra Breckenridge goes to Gersh and Mosaic

CAA had a good day: Keira Knightley and Neil Patrick Harris signed up.

With “How I Met Your Mother” facing its final season this coming fall, Harris decided to leave his seven-year home at Paradigm to start a new career chapter. The thesp has remained busy during his soon-to-be nine seasons with “HIMYM,” emceeing the Tonys (for which he won two Emmys) and appearing in films (he’ll reprise his “Smurfs” role in the upcoming sequel) and other shows (“Glee”).

Knightley is coming off the Joe Wright-directed “Anna Karenina” and stars opposite Chris Pine in the reboot of the Jack Ryan franchise as well as the John Carney-directed “Can A Song Save Your Life?” She’s been repped by WME, but her longtime agent, Adam Isaacs, recently left the agency to become a manager at The Schiff Company, where he still has her as a client.

Paradigm, meanwhile, has signed John Scott Shepherd. This marks the the writer/producer’s return to the agency after a stint at CAA. He recently created and exec produces NBC’s midseason comedy series “Save Me”; his book “Henry’s List Of Wrongs” was sold by Paradigm to New Line in a seven-figure deal.

And actress Alexandra Breckenridge has assembled a new rep team that includes Gersh, Mosaic and attorney Joel Mckuin. She was most recently in FX’s “American Horror Story” and Shepherd’s upcoming “Save Me.”