White smoke

Believing her new home to actually be alive, especially when her brother almost dies, Marigold and her new blended family won't be safe until she brings the truth to light once and for all.
The phantoms of her old life keep haunting Marigold, but a move with her newly blended family from their California beach town to the Midwestern city of Cedarville might be the fresh start she needs. Her mom has accepted a new job with the Sterling Foundation that comes with a free house, one that Mari now has to share with her bratty ten-year-old stepsister, Piper. The renovated home on Maple Street has secrets. Household items vanish, doors open on their own, lights turn off, shadows walk past rooms, voices can be heard in the walls, and there is a foul smell seeping through the vents only Mari seems to notice. Worse, Piper keeps talking about a friend who wants Mari gone. Cedarville has its secrets, too. And secrets always find their way through the cracks. -- adapted from jacket.