In The Night, On Lanvale Street

Description for IN THE NIGHT, ON LANVALE STREET by Jane Leslie Conly:

Summer has just begun, and thirteen year-old Charlie and her younger brother Jerry anticipate spending the lazy days roaming their working-class Baltimore neighborhood. But since their neighbor Mr. Healy was found murdered in his home, things are different. No one seems to know anything about that night, and Mr. Healy's death remains a mystery.

As Charlie learns more about the murder, she tries to shield her innocent younger brother from the details, and from the strange man who seems intent on enlisting the children's help in solving the crime.