On Netflix, there is a show called Locke & Key, it is written by a couple of people, one namely being Joseph Hillstrom King, pen name Joe Hill; Stephen King's son. 

My best friend had recommended the show, and at the time I hadn't thought much of it as she has a fondness for keys, so in my head, it was no wonder she'd liked it. 

Well, after finishing the show I had been bingeing, sad face, I went ahead and started watching for the hell of it. At the time of writing this, I'm only a few episodes in, and I must admit, I am really intrigued. As for why I'm writing this, I'll get to that in a moment, but first I'll share the Premis of the show: 

After Rendell Locke is murdered at the hands of former student Sam Lesser, his wife Nina decides to move with her three children Tyler, Kinsey, and Bode from Seattle to Matheson, Massachusettes and take residence in Rendell's family home, Keyhouse. The children soon discover a number of mysterious keys throughout the house that can be used to unlock various doors in magical ways. However, they become aware of a demonic entity that is also searching for the keys for its own malevolent purposes.

It's also based on a comic series by the same name, so that should be something interesting to look into.