It seems to me that the prologue is very prevalent in thrillers these days.  Often you get a different point of view.  You get a look into the mind of the (serial) killer.  Or you know who did it.
How does that work for you for a mystery?  Do you as a reader like to only know what the detective knows, so that you can solve things or be surprised along with the detective?  Or do you like knowing something the detective doesn't know, so you can see the train wreck coming, so you can squirm, so you can root for the detective to avoid disaster? 

Win one for Seth

From our Stanford U. class–Getting your story out there: Social media, eBooks and More

Click to download or listen to Seth's audio. 

Click to listen or download my audio.

I'm going to lick this thing one way or another.  Copying the Libsyn link from my browser. 
Just in case, let's try this:  http://traffic.libsyn.com/sethharwood/GreatClass.mp3 in addition to embedding it above. 

Stories are dreams.  Characters are flesh and blood reality.