Teen Wolf, Season 5

[Malia, Kira, Josh, and Corey are locked in the morgue of Eichen House and are talking about the McCall Pack's plans]

Corey:
Anybody know how we're supposed to get out of here? This place is still in lockdown.

Kira:
It's not just locked.

Josh:
Yeah, I can feel it, too. What are we supposed to do? Just wait here?

Malia:
There's a Plan B. We've got a guy on the outside in case this happens.

Josh:
Who?

Kira:
Mason.

Corey:
[shocked] Mason's going to unlock the lockdown? How's he going to do that?

Kira:
He's got the blueprints of the building, and he has the full map of Eichen's electrical system. All he has to do is get into the transformer shed behind the building.

Malia:
Don't worry-- Mason knows exactly what he's doing.

[The scene cuts to behind Eichen House, where Mason is holding his cell phone to his ear with one hand and gaping in horror at the blueprints in his other hand while he leaves Liam a voicemail]

Mason:
Liam, call me back-- I have no idea what I'm doing.