Looking for a book

[Yumi1234]

Hi all.. I'm looking for a book I read about 10 years ago. I can't remember the title or the author.. just something about "Boston" that was on the cover.

The storyline was about a boy who ended up raping a little girl in the park/woods who rode a bike and his mother came to find out about his deed when the police began to look for him. She hid him in a secret room/bathroom under the staircase in their house, and (I think) she died and another family moves in while this man is still hidden under the stairs. He ends up kidnapping and raping and killing and burying all of the daughters of the house. 

Please can anyone help