Do you like this book idea? I have written the first chapter and love how its going so far!?!?!?!?!?!?!?!?!?!?

It's about four friends (2 are detectives and 2 are medical examiners)... it is set in NYC, and someone is luring female homicide detectives into abandoned building and murdering them. The title character is Sparrow and her friends are Jennifer, Jason, and Summer!!!! Do you like the names, idea, etc.