Bonnie: Stefan got in touch with me and told me Silas is pretending to be him and the real stefan is stuck in a coffin at the bottom of the ocean.
Caroline: What?!? Omg! I will be right there!
Along the way Caroline explained the issue to Klaus
Once they got there Caroline asks if they should call Elena and they do while her and Damon are "busy"
Elena: I'm only answering if its a best friend emergency.
After Caroline tells Elena Elena texts Damon and tells him so Silas won't hear.
Convo:
Elena: Stefan's in trouble
Damon: What I thought he was still asleep
Elena: No that's Silas
Damon: Crap! Lets go
They get dressed and rush downstairs and find Silas sitting on the couch
Silas: Hey where you guys going?
Damon: Oh um out for some alone time. (Winks)
Elena elbows Damon
Silas: Oh, um ok....
Elena: K bye
And they rush to Bonnie's to meet everyone.
