If you want a thriller that is close to real life, then Unheard Of by John David Bethel is for you.  My review is now up on EmmabBooks.com 

Set in Las Vegas, a killer (or killers) is on the loose.  Can the killings be stopped before the tourism  industry is ruined?  This tension building thriller includes, within the storyline, comparisons with real life serial killers.  Excellent!

All the best.  Emma