The governor calls on Team Scorpion when his daughter is mysteriously "bio-hacked" with a deadly virus and only has 24 hours to live. The case takes on a deeper significance for Walter after he receives a letter regarding his sister.

Team Scorpion enlists the help of a musician who created a controversial algorithm that generates hit songs to help find the murderer of a music blogger. Meanwhile, Drew asks Walter to help him connect with his son.

On Christmas Eve, Team Scorpion races to find a way to save a young boy's life after he is trapped in a beachside cave and the rising tide threatens to drown him.

Team Scorpion is tasked with uncovering a mole inside the CIA who is being coerced into stealing deadly chemicals. Paige gives Walter a flirting lesson in preparation for the case.

Team Scorpion must jog the memory of an injured former Secret Service agent to prevent nuclear weapons from being launched. Meanwhile, Paige is torn when Drew suggests that moving to Maine might be the best for Ralph.

A tech billionaire hires Team Scorpion to rescue his kidnapped daughter. Meanwhile, some feelings get hurt when Walter gives an interview and fails to acknowledge the other members of the team.

When a conflict in Eastern Europe threatens to escalate, Team Scorpion is called on to help facilitate secret peace talks to prevent World War III.

While on a mission to save lost hikers, Team Scorpion’s helicopter crashes, igniting a massive wildfire that quickly closes in on them. Also, Sylvester must help their injured pilot who is unable to make it to safer ground.

To protect a key witness who is en route to testifying against a deadly drug cartel, Team Scorpion takes her on the run, with the cartel hot on their heels.

Scorpion, torn apart and uncertain about their future as a team, must come together for their most important mission yet – to save Walter’s life as his car teeters on the side of a cliff.

Team Scorpion goes undercover on the “Super Fun Guy” movie set in Kazakhstan in order to disable a soviet era nuclear missile being sold by terrorists.

The members of Team Scorpion brave subzero temperatures in Antarctica to save a United States Special Forces unit. Toby risks his life to save Happy.

After Sylvester scores big on The Price Is Right, Team Scorpion must infiltrate a high-end car smuggling operation about to ship bioweapons to South America.

While on a secret mission in Djibouti, Africa, with his new Homeland protégé, Tim Armstrong, Cabe is captured and Team Scorpion must save him.

Before Halloween, Team Scorpion must infiltrate a deep, vast cave system in order to prevent a bat population from destroying the North America ecosystem. Also, the team dons costumes to stage photos from Halloween’s past for Walter’s upcoming immigration inspection.

It’s Christmas Eve and Team Scorpion’s electronics-free mountain getaway turns deadly when they come across gun-runners, and Ralph is kidnapped when they try to escape.

Following a severe storm, Happy’s friend Ada, who lives in a sterile bubble to protect her compromised immune system, is left with dangerous debris on the verge of puncturing the structure. Now, Team Scorpion works to safely move Ada to a more secure location without risking her life.

To stop a dangerous virus from spreading, Team Scorpion must locate a rare endangered monkey in the Amazon that has the antibody for the cure. Also, Toby and Happy see a counselor to prepare for matrimony.

When poachers almost kill a pregnant endangered deer, Team Scorpion recreates the animal’s womb to try to save it and its baby’s life. Also, Happy and Toby discuss the future of their family.

As Team Scorpion anxiously awaits the verdict of Cabe’s trial which could send him to prison, they focus their nervous energy on trying to save a dog stuck in a cistern.