Influences

Some of my influences include:
American Horror Story (Murder House story)
The characters of Larry/Ben/Hayden. Larry and Ben both cheated on their wives, even if the outcome of being discovered was different for both of them, as Larry's wife setting their bedroom on fire with her and her children locked inside but Ben's wife simply pushed Ben away emotionally.
Hayden on the other hand influences how Amber is going to act after she dies in the story as before, she will be kind, gentle, sweet and innocent. But after she dies she will be angry towards Duncan, just as Hayden was angry towards Ben's wife, Vivienne, for having Ben even though he had been cheating on Viv with her.

American horror story (Asylum story)
Sister Jude getting hurt by what she had done before becoming an inmate at the asylum, such as electro shock therapy, being forced to listen to the same song over and over.

The play The Perfect Murder.
This will mainly help me work out what kind of things Amber can do to haunt Duncan.
In the production Victor's ghost made his wife hear his voice without seeing him, and when she did see him, he acted naturally, as if he wasn't dead (which he isn't but is not telling his wife).
He also turned on the TV and Radio from a distance, with specific things playing on them at the time, such as the song Every Breath You Take by the Police.

War of the Worlds live tour
Use of projection and other techniques that showed Liam Neesons character throughout the piece.

Songs such as
Crossfire by Eric Stuart Band
Remember by Name by Robbyn Kirmssé (From Danny Phantom). Base for the whole idea to begin 
with.
Sacrifice - Voltaire
Every Breath You Take - The Police
The Devil in Disguise - Elvis Presley