You have to take the situation into account also.
Our police department is great, but not exactly skilled in murder investigations. They had already totally messed up the crime scene. They had one other murder in town and that was the unsolved murder of Robert Redford's daughter's boyfriend. Not exactly the kind of feel good trust one would have when one's daughter was just murdered. Our police department was more used to making pot busts than anything major like murder.
Ramsey is a smart man. He would have been stupid not to lawyer up. Would you trust your life to Barney Fife, after the first responder had already totally not followed procedure when they were called to the house?
And FWIW, the DA and sheriff's office know exactly who killed her. Our neighbor was one of the investigating officers (a competent team after the first responder debacle) and let that slip at a party. However, unless things change in the future (technology, etc), according to him, they will never, ever be able to arrest let alone prosecute.
One other thing - do you really think that if the DA had so much compelling evidence, enough evidence to write an entire book about, that they wouldn't go ahead and make an arrest?
Especially when the general public, ie: the potential jury pool, reads the book and believes it? That would be a fair indicator that the prosecution might have a better than average chance at a verdict.
Many around here consider the author a whack-a-doodle.
How long ago did the investigator let it slip? Seems like if this was true and the Ramseys were not involved, all of these people would not be writing these books.Ramsey has a team of pitbulls for lawyers. They could issue some sort of cease and desist or demand that the police dept. say they have a suspect and that it isn't one of the Ramsey family. Even people who were very close freinds of the Ramseys suspect them.
I think we all know or have heard of cases where for one reason or another, people have gotten away with murder. Many might consider the author a whack-a doodle but many also think the Ramseys got away with both a murder and a cover up.