The Statue Walks at Night - Joan Lowery Nixon
Sean and Brian are brothers. Their dad is a private investigator. Their dad is hired by the museum to find out who took the missing sketches. Sean and Brian decide to do some investigating of their own.I know this series is for younger readers, but it's written by one of my favorite authors, Joan Lowery Nixon. I think this is a good start to the series and I'm sure children will love this. It is a fun mystery.