We all need people in our lives for different reasons.
I have two really close friends that I work with: Kate and Heather. Kate is sweet but she's also tough. She's the person I need in my life because she's taught me how to stand up for myself more and to not be afraid to have an opinion. She's also the person who will always encourage me to go to the gym. Heather, meanwhile, is more emotional: she's the one I turn to when I'm having a bad day and need some encouragement or when I want to talk about fashion. I love them both but I need them for different reasons. In the season four finale of Suits, the main theme of the episode is about needing other people. It's about how far we will go to keep the people we care about in our lives. Let me give you a run-down of the plot now, because we'll spend a lot of time talking about characters in the coming paragraphs: Sean Cahill (head of the SEC) is in a bit of a bind because he can't find the dirty money that Charles Forstman gave to Eric Woodall. If he doesn't find the money, they won't be able to prosecute Forstman and both he and Woodall will walk away clean. Sean is desperate and enlists Harvey's help to find the money. As it turns out, Harvey and Forstman had a convoluted past (Harvey trusted him and got too close, then was exploited and blackmailed by Forstman because Harvey needed money to give to his brother) and therefore, Harvey is hesitant to make the same mistake twice. Mike and Rachel then make it their jobs (literally) to find out where that missing money went. As they soon discover, it is going to pay for treatment for Eric Woodall's first wife who suffers from Alzheimer's. And that's when Harvey discovers the reason why he won't turn on Forstman: he has too much at stake. Back at Pearson Specter Litt, Norma suddenly dies, leaving Louis an angry, grieving mess and Donna cleaning up the pieces and helping her friend for the time being. Elsewhere in the episode, Jessica is still trying to recover from her break-up with Jeff. It's not going super well.
The point of "Not Just A Pretty Face" was that people are put into our lives for reasons and often, we have the tendency to ignore those reasons or to presume that those people will always be there; that we can just wake up and pick up wherever we left off. People need other people, and no one realizes this in the season finale more than those characters at Pearson Specter Litt.