(they stand hunched over their victim)

"i...i actually did it..."

(they look at their weapon and themself, contemplating their next action, before feeling the presence of someone else) (that someone else is you, but i like my characters speaking in third person, so i'm not gonna have this character address you as "you")

"you!? what are-!? you won't...you won't tell anyone...will...you? i'll...i'll...end you..."

(their voice is almost a whisper. the last part is much quieter)