U know... first responders and news reporters often turn out to be the criminal responsible for the very crime theyrr working on.
For example: a firefighter lights a fire in the area his division covers...
A cop murders somebody in central park, and 5 days later tells his partner he feels for some reason like they didnt search under the bridge well enough...
...an aspiring music reviewer/news reporter shines a mirror into motorists' eyes causing a huge accident, so he can be first on the scene to get a career-boosting exclusive report...