NCIS: Los Angeles Season 8 Actors Chris O'Donnell (R) and LL Cool J
Actors Chris O'Donnell (R) and LL Cool J star in the CBS show "NCIS Los ANgeles". Here, they pose at a CBS television fall season premiere event in Los Angeles September 16, 2010. Reuters/Mario Anzuoni

"NCIS Los Angeles" Season 6 will air its 20th episode titled “Rage” on Monday, April 13, 2015 from 10:00-11:00 p.m. EST on the CBS Television Network. The Naval Criminal Investigative Service, or "NCIS" LA Team led by Senior Field Agent Sam Hanna (LL COOL J) and Supervisory Special Agent G. Callen (Chris O'Donnell) will check out a case that involves some stolen nuclear material and a group of suspects that they must infiltrate.

Spoiler Alert! This article contains spoilers of the show’s 20th episode. Read only if you want to learn more about it. TV Guide reports that in "NCIS Los Angeles" Season 6, episode 20 “Rage,” Callen and Sam will work undercover as a guard and a prisoner in order to get into a white supremacy group. The “NCIS LA” team believes that this group has the missing nuclear material that they are looking for.

Meanwhile, “NCIS” Special Agent Kensi Blye (Daniela Ruah) will also go undercover as a biker chick with tattoos. Kensi will play the part of Callen’s girlfriend. Plus, the revelation of Henrietta “Hetty” Lange (Special Agent in Charge/Operations Manager) and Callen’s first meeting will also be shown in this episode. A younger version of Callen will be seen by “NCIS Los Angeles” viewers.

Aside from Hanna, Callen, Hetty and Kensi, Los Angeles Police Department, or LAPD Detective Marty Deeks (Eric Christian Olsen), Technical Operator Eric Beale (Barrett Foa), Intelligence Analyst Nell Jones (Renée Felice Smith) and Assistant Director Owen Granger (Miguel Ferrer) will also help in solving this case. The Internet Movie Database, or IMDb reports that Alicia Coppola (FBI Agent Lisa Rand), Rebecca Field (Ginny), David Goldman (Bank Manager), Kent Shocknek (Reporter) and C.J. Valleroy (Young Callen) will appear in “Rage.”

A slideshow video of promotional photos for this episode was posted by TVBox Promos on YouTube. It shows pictures of the cast in their scenes, including Sam, Deeks and Granger standing near a van. Sam appears to be talking to someone over the phone. Another photo shows Deeks helping two women get to safety.

The next “NCIS Los Angeles” Season 6 episode after “Rage” is “Beacon.” It is the show’s 21st episode and it is directed by Diana C. Valentine. It will air on April 20, 2015.

Let us know your thoughts on the upcoming episode of “NCIS Los Angeles” Season 6. For questions/comments regarding the article, you may email the writer at j.somosot@ibtimes.com.au.

CREDIT: YouTube/TVBox Promos