April Junebug is one of my favorite book ideas yet! April is 6 years old and she has solved many crimes. Her mom had a heart attack in the car. Sadly she did not make it, so she had to live with her dad, who was divorced from her mom.
It turns out her dad is a billionaire. when a strange letter appears on the front step saying "I will make sure your're dead soon and then the money will be mine.". It's up to April to solve the mystery.