Write about something that scares you when you sleep

Something that scares me when Im sleep is death.The reason why I say that is because like if someone dies in my family or in general I have dreams of what happens to them, and why it happens. I dont know how it happens it just happens. Like they wont let me wake up until I seen what happens to them. Its very unoriginal and scary. Sometimes it happens very so often though. I can control this horrifying dream if I wanted to, but sometimes it helps to see what happen to people before they die, and how they felt.