Lately....

So lately I've been having dreams where people die. I don't kill them I try to save them but no matter what I do a lot of people die. I don't know what it means because I've been having one almost every night. The first one was that I was a detective trying to solve a case. My dad was in a insane hospital and he would sleep walk and kill little girls. I had to try to figure out how to help him. At the end of a dream I figured out how to make him only hurt the girls but not kill them completely but then my dream ended and I never fixed it all the way. The next one took place at my friend's grandparent's house. There was a barn that stretched out over a pond that had hippos in it. There was this lady who walked into the barn and there was a whole in the middle and her dog fell down it and into the pond. She reached down to grab him but a hippo came up and ate it. Then he came back up and littereally tore here to pieces and ate her too. Several other people went swimming in the lake or something else and they all got eatten. I tried to save them but I never got there in time. And the 3rd one that I've had was about this guy who would trick teenage girls to go into his night club so he could kill them. I tried to tell people about it after I barely made it out of there alive, but no one would listen to me. -I don't know what all of these dreams mean, but it's weird that they are all kind of the same thing.