Lisa Niles’ true killer is Dr. Matthew Hunter

“Okay, I understand that you don’t want to be with me. You’ve made that perfectly clear, but you don’t have to be a jerk about it. I don’t blame you. Georgie was the one with all the brains. She was a good person, better than me in a lot of ways. She was my anchor, you know? The person that I held onto when I needed to feel grounded. And now that she’s gone, sometimes I feel like I’m just gonna drift away and there’s nothing or no one that will be there to stop me. And I know you know how that feels, Spinelli. Because you told me that happens when your brain stops keeping busy that it just….it drifts away. But I want you to know that I am here for you to hold onto, okay? And so is Georgie. I just need you to reach out.” (x)

Matt: Spinelli’s not trying to accuse you of anything. Maxie’s innocent. We’re just trying to prove that it was someone else on board who actually killed Lisa.
Elizabeth: I know, and I wish there was something I could tell you guys, but the last time I saw Lisa, she was very much alive. The next thing I knew, I was being pulled out of the water by - 
Matt: By some mystery guy with some ripped abs.
Spinelli: Perhaps he has the answers that we seek.
Elizabeth: Actually, he’s not a mystery anymore.  

She’s my best friend, I want to help her like you 

I apologize in advance 

SPINELLI: Now I must unearth the truth about Maxie
SAM: Hey, let me know if you need anything, okay?