Shadow creature

Last night, I was dreaming that I was watching a horror movie where a woman was starring at her shadow at a wall and then next to her shadow was another shadow but, no one was casting it. Then the woman move her hand's shadow to that shadow's hand and it grabs her. Piercing it nails though her hand, and what ever was happening her shadow was happening to her. She Screamed in terror and soon after the shadow warp into a big hands and crushing her. Then I woke up after..... it was much of a nightmare