The Stayer: when the past comes back to hurt you

Ava Morales nightmare becomes reality and she was hired by her late mom's formal boss to kill a very influential man (Jaxon Knight)that his presence alone in the country is hazardous.

After killing the man, she had an accident that left her in coma for a few months and when she woke up she realized that she can now see dead people and the ghost of the man she killed hunts her and refused to move on to the after life.

When she decides to change everything about her and starts to attend a new high school, her high school crush and best friend turned out to be son of the man he killed.

With the man's ghost hunting her and his son's presence in her life, would she be able to survive and send the stayer to the after life?