Margo Cathleen Harshman is an American actress known for her role as Tawny Dean on Even Stevens, on The Big Bang Theory as Sheldon Cooper's assistant, Alex Jensen, and as Delilah McGee, Timothy McGee's paraplegic wife on NCIS.
The cases of the F.B.I. Behavioral Analysis Unit (B.A.U.), an elite group of profilers who analyze the nation's most dangerous serial killers and individual heinous crimes in an effort to anticipate their next moves before they strike again.
