New laws went into effect back in August affecting sex offenders in the Show Me State.
They now have to register to their county Sheriff's Department within three days of moving.
Failure to do so is now a felony.
"Ignorance of the law is not an excuse with these people. If we know of an offender that moved into our jurisdiction, someone calls us and tells us. We are proactive about this, and we knock on the individuals door and bring them into custody if they are not abiding by the rule," says Captain Jimmy Shinn with the Marion County Sheriff's Department.
Also, there are new laws regarding sex offenders and Halloween.
Sex offenders are required to stay away from children on Halloween.
They must also stay inside their home from 5:00 p.m. to 10:30 p.m. unless they have a good reason to be gone.
A sign must be posted on their home stating there are no candy or treats at this residence.
All exterior lights must also be turned off after 5:00 p.m.
Failure to abide by these new Halloween rules is a Class A misdemeanor.