The 12th season of NCIS: LOS ANGELES finds Callen (Chris O?Donnell) and Sam (LL COOL J) continuing to take on dangerous, vital cases with international ties, while working to find balance as they each try to maintain new and blossoming relationships. Also, Hetty (Linda Hunt) finds a cryptic way to lure Nell (Renee Felice Smith) back to NCIS, and Deeks (Eric Christian Olsen) and Kensi (Daniela Ruah) will take the big step of looking to purchase their first home as they continue to try to have a baby, which may need to take a backseat when Deeks finds himself sidelined from his job, and a case from Kensi's past will put her life in jeopardy.