If you think she only did it for the money, you haven't even 'scratched the surface'. [=there are many other factors, reasons, etc., involved]
Despite the 'surface' differences between the two candidates, they are very similar in most ways.
The tension between them is beginning to 'rise to the surface'. [=it is becoming easy to see]
(..) locked. I have to break free from this culture of mechanical reproductions and the thick incrustations dying on the surface. Oh, Christ. Fuck it. These are all my dolls. I used to chop their heads off and their arms (..)2003 House of 1000 Corpses