Someone is Following Pip Ramsey (Stepping Stone Books)

Illustrated in black-and-white. Strange things start happening to Pip Ramsey after he buys an old Russian doll at a yard sale. First, there's a peculiar phone call. Then his backpack disappears, and the toys in his room are rearranged. Pip is sure he's being followed--on his way to his friend's house, he notices someone lurking behind him. Pip doesn't know why all these weird things are happening, but he soon finds himself entangled in an 80-year-old mystery involving a priceless treasure from the Russian royal household. This contemporary mystery is packed with lots of boy appeal!