The haunted dolls

It was a gloomy and rainy day unlike what is expected this time of year in Tampa Florida. Alex and Sarah made note of this. Alex asked his twin sister Sarah "Do you feel like something's off"? "What do you mean?" asked Sarah. "I can't help but feel like something horrible is to come just look at the sky it's dark red and gloomy" said Alex. "Now that you mention it I been having nightmares of this doll that looked familiar yet I don't recall seeing it" said Sarah. "Let's go home and check on grandma" they said in unison. They rush home and there was an undeniable thickness in the air and it was a deafening silence which was odd normally when they get home from school there was a hot dinner in the oven or on the table and soft classical music playing. Alex and Sarah knock on grandma's door three time there was no answer. They slowly open the door to find their grandma unresponsive with a single doll on the floor with a broken arm. "Alex!" Sarah exclaimed "look at the doll on the floor it looks exactly like grandma it even has her birth mark on the right side of her cheek same size too." They agreed it was especially usual considering they never knew or seen porcelain dolls in grandma's house. They soon realized their grandma had passed on while they were at school. She left Alex and Sarah in her will as the only ones to inherit the house and lucky for them they had both just turned eighteen three months ago...