'General Hospital' Promo: Is Nina a threat to Sam and Silas? (Spoilers)

Is this the face of danger?

This week on General Hospital, Silas Clay (Michael Easton) tells Sam Morgan (Kelly Monaco) he loves her. These are the words she has been waiting to hear. But, Sam is suspicious of Nina (Michelle Stafford). Is Nina keeping secrets? What is she hiding? Does Sam have reason to fear Nina? Check out the GH promo below: