Children of Fear (Fear Street Sagas #7) by R.L. Stine - Vintage Paperback

The power of fear…

Luke Fier hates listening to the townspeople talk about his sister, Leah. They call her evil. They say she has unnatural powers.

Leah does have a strange talent—she can communicate with the animals. But Luke is sure she would never use this gift for evil. At least he was sure before their parents’ horrible accident.

Now Leah seems so different. So angry. Luke is almost frightened of her. Could his sister’s gift destroy them both?