Scared of the Dark

Shadow and Phoenix don't have what others would call the sweet life, with Phoenix being almost too scared to walk the of his school and Shadow never talking to anyone when she's not fighting them. But one day their mother goes missing, and due to lack of evidence, the twins take it into their own hands to find their mom. However, while searching for their mother, their house gets a surprise visit from a ghost. The twins realize that they're new ghost must be the one that took their mother. So now, they have to fight it.