books like experiment in terror

[Sin Tess]

Heya! I really liked the Experiment in terror by Karina Halle. When I say liked it's more like I've made an obsession for it. Unfortunately for me, I haven't found anything like this series. I've also read Davil's Metal, but it wasn't quite what I wanted. Therefore, can you recommand me a series or a book with spooky ghost hunting, paranormal activity and human protagonists?