“Scorpion” Season 3, episode 16 centered on Team Scorpion’s mission to track a U.S. spy before her identity is exposed to the feds.

“Keep It In Check, Mate,” opens with the arrival of Happy’s (Jadyn Wong) dad. Cabe (Robert Patrick) already spoke with him and was the one who invited him without Happy’s knowledge, and the latter is not necessarily pleased with this. Cabe wants Happy’s father to testify to the FBI regarding the death of a man named Sunny, and he agreed.

Team Scorpion discover that Sunny is a member of the CIA and in order to get more information about him, Walter (Elyes Gabel) and Sylvester (Ari Stidham) both have to join a chess tournament as undercover agents to save the life of man who is could follow in Sunny’s fate. While at the event, Team Scorpion tracked Natalia, and Walter and Sylvester play against her in a game of chess. After a series of elimination, Walter and Sylvester are pitted against each other. One of them has to lose so they could compete against Natalie. But the two competitive boys didn’t want to be called a loser. In the end, Walter faces the guest character.

During their game, Walter sends Natalia a secret message asking her to head to the ladies room where Paige (Katharine McPhee) is waiting for her. While there, they help Natalia escape, and she and Paige had the chance to talk about the real reason why she stayed back in Sardovia. It was later on revealed that Happy’s dad had an involvement with the Team Scorpion’s case so he decides to turn himself in. Happy is upset, but she eventually said her goodbyes to her father.

Elsewhere, Ralph (Riley B. Smith) receives two invitations to his school’s Valentine’s Day event. He cannot decide which of his two classmates he should spend time with so he asks for Walter, Sylvester and Toby’s (Eddie Kaye Thomas) advice. Ralph also asks his mom for tips on how to dance nicely.

“Scorpion” Season 3 airs Mondays at 10 p.m. EST on CBS.

Walter (Elyes Gabel) once again saved the day in “Scorpion” Season 3, episode 16. Photo: CBS

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