A little rearrangement would fix the feeling of confusion I had here. First I'll detail the confusion.“If you ever raise a hand to her again I swear you’ll regret it.” said Bryce. His stepfather inched towards him with the scent of vodka on his breath and a look of hatred overflowing from his eyes.
> I'd rather know the relationships first. At this point this is what I think: it's Bryce's POV; stepfather has been hitting Bryce's girlfriend or wife.
Larry had hated Bryce since the moment he had met Bryce’s mother. He knew all too well that she loved Bryce more than him, and he made her pay for it many times over.
> OK, it's *Larry's* POV, and he's hitting Bryce's mother.
The tell-tale bruise that began forming on her cheek was enough to prove that. Why she had married him after his father died was lost on Bryce.
> No, it's Bryce's POV!
You could tell us up front: Bryce's stepfather Larry hit Bryce's mother. *Before* the dialog, which after all comes *after* the hitting (and Bryce's seeing the bruise).
To fix the POV problem, you could change "Larry knew..." to "Surely he knew..." or "Bryce knew Larry was aware..." or some such.