Initially it was unpredictable but then it was quite obvious who the suspect was.
A thriller which is very vaguely layered. It is a bit frustrating when the author, in desire to justify the characters, keeps on telling the extra (not-needed) information about the characters. A repetitive plot in 400 pages did't work out for me. It would be so great if the story came out in a much abbreviated version.
Honestly, the "too much information" for the most part irritated me.