So I am 15, in 9th grade. Homeschooled. (Unneeded information. Oh well.) For one of my assignments I had to free-write for 3 minutes making a detective story idea. Thus is what I came up with:(note that it IS free-writing..I didn't fix anything except when I accidentally spelled barbender instead of bartender.)
There was a duck, his name was hubert. His master was a low-Town bartender named Alicas. During the day he was just a normal pet duck, quacking his way through life. But after midnight his Identity changed, He became Professor duckton, high-town dectective. He caught criminals of all shapes sizes and attitudes. He did not fall for any "I was framed I'm not guilty" acts. He knew when they were lying, he could sense it in is bill.
My mom laughed(which I liked!) and said it sounded exactly like detective stories are phrased.
I hope you enjoy!