This was something new to me- a mystery being investigated by "the King" (uh huh huh!) I picked it up at a library sale and enjoyed it, even though I have a few minor quibbles with it.
First, it was fun because it was Elvis. Watching Klein try to get inside the head of Elvis and bring out the morose, but fun-loving country gentleman was a lot of fun. Getting inside of Elvis' head, even if only in a fictional manner, was fun as we saw his thought regarding the Colonel, Priscilla, Ann Margaret, and making movies. This story occurs at the end of 1963 as Elvis is wrapping up the filming of "kissing Cousins." Elvis is discouraged about the roles he is getting in Hollywood and the infantile entertainment he is churning out. He is resentful towards Col. Parker's business management, and jumps at the chance to do something more interesting when he gets a letter from an old army acquaintance who has been framed for a murder. Off he goes to investigate. He sings his way through Hollywood as he investigates and Klein weaves even the moments of song into the story in a manner that is more seamless than most of Presley's real life films.
The minor quibbles that I had were about things like "White Tower" hamburgers in L.A. I don't recall every seeing one. A bit of research on the internet indicates that they were a much more in the East and people don't seem to recall "White Tower" (a competitor of "White Castle") ever making it to the Los Angeles area. Perhaps author Klein knows better than I.. it just seemed an odd bit of flavor to add if it didn't exist.
More major was the inclusion of a Doctor from Mexico who was working on D.N.A. coding. Using this as evidence gathering just seemed a bit odd and really so far out of place and time as to hurt the novel more than it helped. All it was used for was to confirm that the murder victim had been sexually active with more than one man. I felt Klein could have introduced this information in a less anachronistic way. In other words, he could have stayed in the time period.
Another issue was the introduction of a Blue Volkswagon Beetle. In 1963, there were a few Beetles around, but the term "Beetle" was not really popularized until the late 1960's when it entered VW advertising. The Beetle was fairly rare in the United States, gaining popularity in the mid to late 60's... So, Elvis's repsonse to seeing a VW should likely have included the fact that it was sort of rare instead of commonplace. I could be mistaken about the popularity of the bug-- just going primarily by my recollection and a quick scan of a Wikipedia article.
Despite those quibbles, the novel was fun, the mystery was decent and, heck, it was Elvis.. the king... and that alone made the book a lot of fun. Apparently, there are several others in this series and I will pick them up somewhere along the line just because it was fun...