Building burns prison.
I believe it's to catch felons. Copied from wikisimpsons: You can now send characters to help wipe out crime and earn bonus rewards! Keep giving felons the "what-for." New Felons are released ev...
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Your Burn's Prison will generate Felons, then you can click on them to send a hero to fight them, OR you can click on their icon in the top right corner of the screen.
