Police are urging people who are celebrating Halloween this year to be sensible.
Norfolk Constabulary is making posters available for people to download which indicate if trick or treaters are welcome or not.
Revellers are also being reminded that for vulnerable or older members of the community, Halloween can be both a distressing and intimidating time.
Ed Brown, chief inspector of Norfolk Constabulary, said: "Please look out for each other this Halloween – it should be a fun night for all, and we want to ensure it’s safe for everyone.
"Some people may find unknown people knocking on their door when it’s dark outside a frightening experience, so if you are out trick-or-treating please make sure you only visit people that you know. This is also important for your own safety."
Police are expecting this weekend to be busier than usual in Norwich's clubland with people celebrating Halloween and extra officers will be on patrol.
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules here