You were able to then take advantage of his arrogance and ignorance and figure out where

the hell he was.

We'll clear the house methodically, checking each room, securing any individuals below.

Hello and welcome to the best case worst case.

This is Jim Clemente, former New York City prosecutor, retired FBI profiler and writer

producer on CBS's Criminal Minds.

And with me today is our very special guest.

Derek Levasser, retired police officer.

Well Derek, thank you for coming back to best case worst case.

And let's dive right into it.

You were a police officer in a very densely populated area with a very small police force

and you came into contact with some very extreme cases.

Why don't you tell us about another case, one of your best cases or worst cases?

Right.

Just mentioned, we had the shooting in 2007.

After clearing all that coming back, I decided to pursue what ultimately I always wanted to

do, which was to get into investigations to become a detective.

And unfortunately enough through some of the things I had accomplished in control and you

take the test, you know how it goes, the whole process, I was promoted to detective in January

of 2008.

And when you enter detectives, now you may work with some guys that you're familiar with,

but just like patrol, you're the rookie again.

...