Rachel Spratt's fast growing series about a young girl detective, Friday Barnes, has stolen the attention of many eight to 12-year-olds since its release in 2014.

The second book of the series Friday Barnes: Under Suspicion, was released early this month and will be launched by Mrs Spratt tomorrow.

For those who wish to attend, be warned, Mrs Spratt's launches are like no others.

"I will do a reading of the book and a quick test to see how well the readers know the book and candy will be thrown at children too," she said.

Mrs Spratt is the author of the popular Nanny Piggins series and has extensive experience in television writing for shows such as Hi-5, Good News Week and Guess How Much I Love You.

After finishing the Nanny Piggins series, Mrs Spratt wanted to try something different.

"Before I finished Nanny Piggins, I had the idea of a female detective and I wanted to write something with a really compelling narrative where the kids didn't want to put down the book," she said.

"I really want kids to enjoy reading. I want them to find reading as fun as television.

"I always say that I guarantee at least six hours of silence with my books."

Mrs Spratt believed reading provided a "cathartic" role for children as well.

"Reading creates a real comforting role and the good thing about mystery novels is that you know the characters are always going to solve the mystery at the end," she said.

The third book of the Friday Barnes series is set to be out in July and book four is expected to be out by early 2016.

Next year is set to be a big year for the Bowral mother, with the first two Friday Barnes books expected to be launched in America.

The Friday Barnes: Under Suspicion launch will be held at the Children's Bookshop in Beecroft from 2pm.

Copies of Friday Barnes are on display at Bowral Bookshop and signed copies are available inside.