I couldnt help but think of the film, Bone Collector. The perpetrator was found in the movie but I highly doubt they'll be found in real life :). There is simply no substantial evidence to incriminate anyone. As we say.. אתה חי בסדר (ata chai b'seret) or in English, "You live in a Movie." moreso a book in this case.
Guatemala judge orders former President Otto Perez Molina detained for hearing in fraud scandal (AP)
from the article: Israeli novel with parallels to Dubai killing a hit in Germany