In the face of deadly mold, Team Scorpion has to say goodbye to one of its own.

Tonight is not just anyScorpionepisode its an emotional journey.

Think of Katharine McPhees finale night rendition of Somewhere Over the Rainbow, and then double it.

Image

Credit: Ron P. Jaffe/CBS

Cabe has even called in a couple favors to the LAPD to help Walter bypass traffic.

The first mission of the night is to…pick up Louise and Sean OBrien from the airport.

Walter and Megans parents have flown in from Ireland as Megans condition continues to deteriorate.

Walter hasnt seen them in 15 years, and I hardly would have guessed they were his parents.

They look incredibly young like Sally Field playing Forrest Gumps mother young.

As they arrive at this hospital, Walter is still convinced that he can stop the inevitable.

He talks about his plan to save Megan, but his dad is hearing none of it.

But it can never bethateasy.

The hospital begins to be quarantined after a mold outbreak is uncovered.

Toby and Happy quickly link the cafeteria workers seizure to the blue mold that is growing on the wall.

The Execution

As the outbreak progresses, time isnt working in anyones favor.

They return back to the kitchen to check on the seizing patient and find blood on his leg.

As per usual, our geniuses know more than the doctors, who are treating the mold with pesticide.

Walter attempts to warn the doctors over the PA system, but its too late.

Sounds super logical, right?

Sly stands up for himself though and says that hes the man whos been taking care of Megan.

Its been a big season for Sylvester, and he deserved his moment in the sun.

Papa OBrien backs down.

On the phone, Mama OBrien lets Walter know that Megan has a bad seizure.

Shes awake again, but shes weak and fading fast.

As Toby puts together a plan, Happy sees a giant hand print, free of mold.

They realize that its Sylvesters.

Hes been using so much hand sanitizer that hes developed a superbacteria resistant to the mold.

Problem is, all of them are inside all except one.

The only issue is the police wont let them into the hospital to deliver it.

Its enough to literally make the man pass out.

While shes gone, Toby discovers the pregnant womans baby has its umbilical cord wrapped around its neck.

Happy appears to help him, but she immediately collapses, falling victim to the mold.

That only leaves one unsolvable problem.

Dont Be Afraid to…

Megans condition is simply not going to improve.

Sylvester asks Sean and Louise for a moment alone with Megan.

They agree to step out, and Sylvester pulls out a present for Megan.

Walter makes it back in time to see Megans final moments.

Dont be afraid, she says, gasping for air.

She starts again and says, Dont be afraid to… and gasps again.

Walter and his parents go back to the garage with Cabe, Paige, and Sylvester.

In the video, she tells him, Dont be afraid of who you really are.

You arent your brain.

Dont be afraid to love.

Thank you for being my brother.

Sean and Louise stay behind, and Paige sits next to Walter, grabbing his hand.

The rest of the team sit, and Walter begins the story.