Meet Penelope Barrows girl detective and her sidekick Ben Walters. Go with her on her perilous journey to solve The Case of the Blowing Whistle. Walk down the street with her while she is hiding in the shadows. Who is that girl with her hair flying in the wind? Where could she be going? Why is that whistle blowing? Delve into her world and discover the truth.

I wasn't making any plans. My plans had been made for me. I was going to Chicago for the summer. Chicago ugh I mean most people go to the beach or to the mountains on summer vacation. Not me, I go to a big, hot city. I was going to spend my whole summer vacation in Chicago with my Aunt Susan and Uncle Joe.

The only thing I was worried about was my mail. My fear was caused by a letter that I received on a very hot day in August upon arriving home from Chicago. It was addressed to me, Miss Penelope Barrows, but when I opened the envelope the paper inside was blank Blank Now I don't know why someone would send me a letter with a blank piece of paper in it, but I was sure willing to find out. I mean a letter with nothing written on it is not a common thing. Why would someone do this ? What could be the reason?