Bill Granger - Public Murders

I just finished reading this book and i really liked it.
The story is set in 1973 in Chicago in a hot summer.
It's about some policemen who try to solve a murder.It's a blond swedish tourist woh is murdered in the Grant Park in Chicago.When they think they caught the killer there's a second public murder.Again a blond good looking woman is killed.So the search for the killer starts again and everything takes a pretty crazy development.The end is really exciting and fascinating.