Is it possible to order Sam (LL Cool J) and Callen (Chris O'Donnell) to do whatever is asked of them?

In the fourth episode of "NCIS: Los Angeles" season 7, which will air on Oct. 12, a mysterious mobile phone will suddenly make its way to Sam and Callen, and they must follow all the orders barked by the caller if they are to protect a lot of innocent people.

SpoilersGuide posted the synopsis for the episode titled "Command & Control," which reads:

"Callen and Sam are forced to work on their day off when they mysteriously receive a cell phone and the caller threatens the lives of innocent people if they don't do exactly what he says."

Will the reliable duo from LA's Office of Special Projects division of Naval Criminal Investigative Service be able to protect everyone while looking for the mysterious caller without being noticed?

But before the heart-pounding episode next week happens, this week's installment of "NCIS: Los Angeles" season 7 will surely tickle the viewers' funny bones as Kensi (Daniela Ruah) and Deeks (Eric Christian Olsen) go undercover to investigate a 20-year-old Peruvian massacre while protecting its sole survivor, a well-known fashion model.

The sneak peek of "NCIS: Los Angeles" season 3 titled, "Driving Miss Diaz," shows Kensi acting as assistant to the agent of fashion model Catalina Diaz (Arienne Mandi) and Deeks disguised as her chauffer. The partners-turned-couple will also get some help from the rest of the team as they stage a mock fashion shoot for Roseline magazine in an attempt to capture the killer.

In the mock shoot, Hetty (Linda Hunt) will disguise as the shoot director while Sam and Callen act as part of the photo session. While their mission means serious business, viewers of the police procedural drama will also see several light moments. Kensi will confront Deeks after discovering that his phone is filled with Catalina's sexy photos, while Eric (Barrett Foa) and the rest of the male population of the team are excited to work on the case as it gives them the access to look at all her raunchy photos.

The episode will air tonight, Oct. 5, on CBS.