Season 2: About Last Night

Vincent tries to talk Sam off the ledge by telling him that he understands
how the urge to exact revenge can eat away at a you, change you and make you
forget that when you try to get justice by hurting someone, you only end up
hurting yourself. This is the moment when Catherine finally reached the
realisation that she cannot deny her feelings for Vincent. You can see it all
over her face.
Not only did Vincent not try to stop her from making choices, he
showed her that he is willing to take responsibility for his own. Vincent’s
talk was really about him and his journey over the past year.