i'd love to! nicolytte, or nico, was born and raised in castle rock. her parents weren't exactly the rockefellers and most of her clothes came from the goodwill, they received handouts from the church, etc. and both of her parents were hard people to live with, but her father was drunk and when he'd get on a binder he had a habit of hitting both nico and her mother. it got so out of control that her mother started to fear for their lives and during one of their major brawls, he was killed by accident. it was never ruled out that her mother did it, but the entire town thinks she did and believes that she got away with murder. (based on dolores claiborne.) because of her gift, (the shine) nico knows the truth about her mother, but can't prove it. so needless to say, she grew up an outcast with just a few friends. she graduated and went uni out in bangor where she got a ba in sociology and then came home to work in castle rock. personality wise, she can be really closed off at first and she's fairly practiced at throwing up walls to keep strangers out of her life. so she's not exactly the friendliest person, but once someone is her friend, she's fiercely loyal to them. because of her abilities she can be a bit of a recluse, but with the murders happening, she's going to be out and about a lot more.
what about your guy? i have some ideas if you were going with sheriff's deputy. and i'm 99% sure castle rock is sheriff's territory because it's unincorporated.