Here’s the Star Trek: Discovery secret scene shown at WonderCon this last week end. In it Mirror Philippa Georgiou (Michelle Yeoh) is approached by Leland (Alan Van Sprang) from a familiar organization.
Gretchen J Berg & Aaron Harberts (Executive Producers & Showrunners) where at WonderCon 2018 on a Star Trek: Discovery panel.

Mary Wiseman, who plays Sylvia Tilly, was acting as chair.

Mary: As Tilly would say ‘The scuttlebutt is’… Aaron and Gretchen I think you have something you would like to share with us?

Gretchen: Did everyone see episode 15, the finale? Nothing will be totally lost if you didn’t but will be help if you did.

Aaron: This is a… well we are calling it a secret scene. it was part of our finale. But then we realised it would be more exciting to bring it to a place like this. For the hard core fans that braved the traffic. Put on their costumes and disco merge and all that good stuff.

So we are really excited to show it to you all. Your the first to see it. Yes you are. They (pointing to the creative and effects people also on the panel) have not even seen it.

Just to set up smidgen of context. Burnham and the Emperor Georgiou of the Terran Emperor have said their good bye…

Lets see where the Emperor ended up…

Star Trek: Discovery Secret Scene

Michelle Yeoh and Alan Van Sprang‘s Section 31 deleted scene from Star Trek: Discovery Season 1 Episode 15. The Season Finale.

Alan Van Sprang aka the man from Section 31

Alan Van Sprang who played Leland (from Section 31) in the scene then came to the stage.

Mary: “Welcome to the Star Trek family”

Alan: Thank you very much, I absolutely honored.

Mary: What Was it like to sit on the secret for so long?

Alan: Well it went on for about six months. Aaron and Gretchen were awesome. They approached me about being part of the family.

I did not know what I was going to be part of. Then when I was given the script I was able to do a scene like that with Michelle. And I guess we will just see where the journey takes us.

He went on to say he was a massive fan of Star Trek: Next Generation. Also he has watched 4 of 5 episodes of Deep Space Nine recently. This is where section 31 was first introduced.

Alan: Section 31 is… hmm honestly I can’t say anything about it!”.

Star Trek: Discovery, 115 'Section 31' secret scene - Alan Van Sprang
Star Trek: Discovery, 115 ‘Section 31’ secret scene – Leland (Alan Van Sprang) © 2017 CBS Interactive, photo by Russ Martin