Itsy Bitsy Spider (Emma Frost #1) by Willow Rose

https://www.amazon.com/Itsy-Bitsy-Spider-Emma-Frost/dp/1493696254
From Good Reads: Emma Frost inherits a house on Fanoe Island when her grandmother dies. She decides to move there with her family, much to her teenage-daughter's regret. One morning a wealthy old woman in her street is found murdered and soon Emma finds herself wrapped in a mystery uncovering the island's dark secrets that not only runs deep within the history of the island but also within her own family.