"Piercing the Cross and the Switchblade Again"

A scene from a novella I'm writing. (don't worry, "Piercing the Cross and the Switchblade Again" isn't the real title.) Thought it turned out pretty well. Annnnnnd I have nothing else to post so, here it is!

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"Who are they?"
"Not they. It's just one. Him. Can...can you see him?"
"Patience son, the crystal reveals all in time. Now, tell me more about this spirit."
"Um, he's in my head. I don't know how to describe it, but it's like, randomly he'll just start talking to me."
"What does he say?"
"I don't know, all kinds of stuff. Stuff about himself and how I should back to where I came from."
"Where was that?"
"I'd rather not say. Hey, can you see anything yet?"
"Oh, I can see him. yes, there he is. He is small and grey, with orange eyes. Long, thin fingers too."
So that's him.
"Wait, he is changing! He is tall now and thin, he has light brown hair. His eyes are green-grey and he has a tattoo on his back."
Mark froze.
That's me.
Yes, you and I, we're the same. I'm part of you. You can't escape me.
"He's talking! Can you get him out? I'm beggin' you! Get him out!!
She can't hear you. Mark, give up this petty soul searching and listen to me.
"You should listen to him."
Mark looked up at the women and found her eyes fixed on him. They were dull and lifeless.
I know what I'm doing. I've been with you for eight years.
"He's knows what he's doing."
I can lead you back to a prosperous life.
"He can take you to new heights."
I can make you the richest man in the world
"he can give you whatever you want."
I only ask for one thing
"All he wants is-"
Your soul
Why is this so hard?
* * *