Shadows in the Dark - The Dollmaker's Curse Series, #3

Layer upon layer of terror is released into the world.Fiona Garris used to have a normal life. But that was before she discovered the secret lurking in the depths of her late uncle's estate: a hidden vault, filled with sinister supernatural dolls, each one bearing a dark curse. Now, they have been set free. And it is up to Fiona to stop them from unleashing unthinkable evil upon the world.Fiona soon finds herself on the trail of a diabolical Russian nesting doll known as Mnogiye.
Seven menacing spirits are bound to this tiny wooden toy. And each one is capable of possessing a legion of human hosts. After taking over a group of social media influencers, it has lured a flock of new victims to a remote resort. One by one, the victims are transformed into horrific versions of the spirits. To release their souls and put an end to the horror, Fiona must find the nesting dolls, and destroy them all.
But with each new victim, Mnogiye's curse spreads. And to put a stop to this evil, Fiona is forced to do the unthinkable.