What is the movie with the kids who go on the haunted island?

halloween is close and i thought of some movie where these kids go on a haunted island or something. i think they are like 16 or so and there are witches or something like that and they had a video camera so its a movie thats like real footage. and one kid goes missing and nobody has found him. does anyone know the title? its like a scary movie but its not gory scary or bloody or anything, it just gives u the chills