My horror story

The story is about an ordinary family, parents and two daughters. One day Kristi, the little daughter begins interacting with an "imaginary" friend named Toby.
Dennis notices that since Kristi's friend appeared, strange things have been happening around the house. He decided to put cameras around all the house to control the paranormal activity.
That night in the girls' bedroom, Kristi wakes up and talks to someone off-camera. When Dennis questions her what happen last day, Kristi tells him it was Toby.
The invisible demon terrorizes Katie and Kristi. The next day, Kristi asks her mother to take them to her grandmother Lois's house.
 They arrived to the Lois's house, Dennis sets up another camera in their new bedroom. At 1am, they are awoken and hear disturbances. Julie goes to investigate; when she fails to returned, Dennis went to look for her. Dennis noticed a human silhouette behind a curtain, but when he looked there is no one present.  Dennis enters the garage and discovers several women, including Lois, all dressed in black. Then hid with Kristi in a closet. Something growls and bangs on the door, but eventually leaves.
Dennis and Kristi leave the closet and walked into the kitchen. In the window, Dennis saw the women outside in the garden, circling around a bonfire. Dennis approaches Katie from behind, and when he places his hand on her shoulder, Katie turns around and  scream that threw him to the other side of the room. Katie escaped and Dennis tries to escaped Lois standed in his way, and Dennis's body is suddenly violently contorted, killing him. Lois then beckons to Kristi and Katie. As they head upstairs together, Kristi calls for Toby. 

Gothic Novel

Who invited the G.N?
The gothic novel was invented by Horace Walpole.

What was the first G.N?
The first gothic novel was "The Castle Of Otranto".

When was it first published?
It was published in 1764.

Wich basic elements of horror didn't you include on your list?
-Footsteps approaching
-Doors grating
-Omens, portents, visions.
-The metonymy of gloom and horror.
-Crazed laughter.
-Clanking chains.
-Lights in abandoned rooms.
-Women in distress
-Characters trapped in a room
-Doors suddenly slamming shut