Elizabeth (Téa Leoni) and Henry (Tim Daly) will continue to fear for the safety of their children in the upcoming episode of "Madam Secretary."

In the episode titled "The Linchpin," the promo shows the McCords taking every precaution to make sure that their kids are safe. Last episode, Jason's (Evan Roe) laptop was stolen and hacked by an unknown individual. As Elizabeth and Henry try to find the culprit, they will realize that the attack is intentional. Someone is targeting the whole family, starting with their kids. In the teaser, Elizabeth is shown holding a piece of paper apparently delivered for her and Henry. On it, the words "We can get to your family anytime" are seen.

In Jason's school, it will be discovered that the security system is hacked as well and that the stalker has been watching the McCord kids' every move. Elizabeth and Henry will personally go to the institution to check. The situation is steadily getting out of hand and the couple cannot help but worry.

FBI Director Keith Doherty (Michael Boatman) will enter the picture and attempts to trace the person behind the attack. Elizabeth and Henry have accumulated a lot of enemies in their respective jobs. Who could be angry enough to begin targeting their children?

Meanwhile, the synopsis (as per CarterMatt) reveals that Elizabeth will once again be busy with an international crisis. War is brewing in Algeria and the United States must do its best to stop it. The situation will be further aggravated by the sudden death of the U.S. ambassador to the country Roy Curtis (Dakin Matthews). Elizabeth's plan is to arrange a change of leadership in Algeria, but without Curtis, it will be almost close to impossible. What will the Secretary of State do?

"Madam Secretary" season 3 episode 2 will air on Sunday, Oct. 16 at 9 p.m. EST on CBS.