A white lie
Olivia is pregnant, no one knows who the father is but her. She plucks up the courage to tell the father. But what is his response? And when something happens that brings out the truth about who the father is, how will the squad take it?
Elliot doesn't have any family, and a detective in the Svu.
Brian doesn't have any family, and is a cop in IAB.
Tucker doesn't have any family, and is a lieutenant in IAB