- "Heard you held up like a champ. Better than my first arrest...that was inappropriate."
- —Sylvester to Ralph
"Kill Screen" is the thirteenth episode of the first season of Scorpion. It aired on January 5, 2015.
Scorpion must help Ralph when he is brought in for questioning by the DOJ after he unlocks a secret level in a dark website video game that unintentionally revealed the location of a CIA safe house in Culiacán, Mexico, resulting in the murders of two agents. Meanwhile, Walter enters an aerospace contest by studying jet propulsion on a dismantled CL-460 rocket engine he purchased to win $15 million for Megan's MS.
In a safehouse in the middle of the desert, a witness against the cartel and two federal agents are shot dead by an unseen weapon. Back in California, Paige finds Ralph playing a computer game at 2 a.m. He explains his game "got weird" and he found a hidden level, but there was no one there. The room looks like the one where the murders took place. Walter accepts delivery of a giant something and gets to work. In the morning, he's still working on it when Paige and Ralph arrive. Happy recognizes the reactor core and Toby pulls off the canvas to reveal a rocket. A billionaire announced a contest for space exploration advancement with a $50 million prize and Walter is working on it. Toby notes Ralph is hooked and suggests Walter has ulterior motives.
Paige takes Ralph to school but black SUVs converge on them outside. Wilson Eckert with the Department of Justice demands they come with him. At the office, Eckert tells Paige they think that Ralph either helped design the game or had information on how to access the secret level that lead to the CIA safe house. Eckert talks to Ralph, who says he just found the secret level. Eckert starts grilling Ralph on how he accessed the game on the dark web. Cabe Gallo and Walter arrive in time to hear Ralph say that Walter showed him.
Paige is furious. Walter tries to explain but Paige isn't hearing it. Cabe gets everybody lawyers and prevents Walter from trying to explain things to the DOJ, who are releasing Ralph for the time being. But they're being very aggressive. The info on the safe house was stolen in a CIA hack three weeks ago along with details of six other unknown CIA operations. Walter resolves to find the real hacker. Paige has to interfere between Walter and Drew and remind them the situation is not about them.
Back at the garage, Toby tries to get Walter to chill out. Walter insists he only showed Ralph the dark net because it's where he could find people like him. When Paige brings Ralph back to the garage, Drew worries about the time Ralph is spending with the team. Sylvester reports he thinks he found the game's designer on a chat room. Walter asks Ralph about communicating with him and Ralph says he messaged that the entrance was too easy to find and he changed the game.
Cabe points out the government could see that as Ralph helping design the game and they'll need the designer to say the suggestions were innocent. Toby manages to draw him into responding by bashing him in a chat room. They race to trace him. He's at a video game convention. Sylvester gets them access to a back room by beating an old video game in record time.
Inside, nerds are playing video games in front of a crowd. One gets spooked at the sight of the team and runs out the back exit. Cabe stops him with a cosplayer's broad axe. Back at the garage, the very young designer, Nate, doesn't know anything about a secret level or CIA hack. Toby believes him when he mentions a partner named Calvin Thorne. The team thinks the other CIA information might be coded in other versions of the game, for buyers to access with a secret code. Ralph just happened to find it accidentally. Drew argues to Paige that the team shouldn't be treating Ralph like an adult and are keeping him from being a kid.
Cabe and the team return from Calvin's place with his safe, which Happy cracks quickly. They access his hard drive and find the CIA files, but they're too encrypted to access quickly. Nate offers to try to get Calvin to confess and they head to his favorite coffee shop. With the DOJ on the way, Nate goes to talk to Calvin, who says he's an hour away from finishing six new levels. When Nate asks about the secret level, Calvin leads him out back and stabs him, then disappears. Walter recognizes the bridge and warehouses from the game and suggests Ralph play the game to find Calvin.
In the van on the way to the hospital, Toby works to stop Nate's bleeding. Ralph starts on the game, directing Cabe and Walter through the warehouses. Calvin jumps out and cracks Cabe on the head with a pipe and Walter chases after him. In the van, Toby uses jumper cables to restart Nate's heart. In the warehouse, Ralph leads Walter to a shortcut and tells him to jump. Walter can't see the bottom, but Ralph promises it's only a seven foot drop. Walter jumps and lands safely. Ralph directs him to open a lever for a storage bay as Calvin runs away. The doors open and Calvin drops onto crate below.
Back at the garage, Toby gets a report that Nate will be OK. Toby reminds Walter to be the adult with Ralph, not just his friend. Drew tells Paige he wants her and Ralph to move to Portland to be safe. Walter joins them and apologizes for getting Ralph into everything, then he points out that there was information on hundreds of people in the stolen CIA files and Ralph helped save them. Walter assures them they're just trying to show Ralph how to be a grown-up genius someday.
- Elyes Gabel as Walter O'Brien
- Katharine McPhee as Paige Dineen
- Robert Patrick as Cabe Gallo
- Eddie Kaye Thomas as Toby Curtis
- Jadyn Wong as Happy Quinn
- Ari Stidham as Sylvester Dodd