What does my dream mean? im really curious :$.?

four ghosts were like turned into humans but they were old&wore clothes from the old days..they each had a hook on one hand& all i can recall from the dream isthat i was showin some friends a picture that my friend danny gave me when the ghosts were like5-8yrs old..they were wearin the same clothes as the picture..and we were sittin in a bench and they pass by us right after i showed them the picture..they said hi to us&were like hi how r u..etc&then one ofthe ghosts who was a girl smiled at me in this way that was so scary like a look sayin"we will be bak"..then oneghost took some friends to a forest in the back of the cottages,theother three took othr friends inside a big shed&i remember seein a girl i work with smilin at me sayin bye! ..me andmy friend chelsea were still sittin in the bench,then idk somehow we were inside a shed in the dark.we knew somethin was gonnahappen so we called 911&had them listenin to everythin incase the ghosts came in! whic they did..the same women came to me smiled and stbbed me with her hook&says i like the smel of your blood ill takesome more&stabs me again&chelseas screamin then one men ghost comes and grabschelsea stabsher 5times&then a shitload of cops&ambulance come to the rescue&i woke up... btw the 'ghosts' were two woman and two men.IDK THEM THO.