Action-packed "NCIS" spinoff follows the members of the elite L.A.-based Office of Special Projects as they use any and all means necessary to take down criminals who threaten national security. Legendary undercover operative G. Callen (Chris O'Donnell) heads up a team that also includes ex-Navy SEAL Sam Hanna (LL Cool J), psychologist Nate "Doc" Getz (Peter Cambor), forensic investigator Kensi Blye (Daniela Ruah), and tech expert Eric Beal (Barrett Foa). Linda Hunt also stars.