Turn of The Key by Ruth Ware

"You're frozen"

"No, I was just done talking."

Welcome to another unhinged 30 minutes with us. 

OKKKKKKAYYY, Ashley was wrong (per usual), Emily was right - A locked room mystery is a subgenre of crime fiction in which a crime, often a murder, is committed in a location that is seemingly impossible to access. The puzzle lies in figuring out how the crime was committed, despite the room being sealed from the inside with no apparent way in or out. Unlike typical whodunits, these stories heavily feature the "howdunit" aspect, requiring a logical and plausible explanation that doesn't rely on supernatural or impossible.

Yes, the spooky kid in a book is a very common trope, often referred to as the "creepy child". This trope plays on the contrast between a child's supposed innocence and their unsettling, often malevolent, behavior, which is considered terrifying because it goes against our expectations of what is innocent and vulnerable.

For Next Week Read The Missing Half by Ashley Flowers 

https://ruthware.com/books/the-turn-of-the-key/