There is something evil in the swamp, something that preys on the greatest fears and desires of those who dare enter. Local legend states that if you enter the swamp, you won't be able to leave.
The local legend is wrong.
You can leave the swamp, but not the way you came in. When you leave, you'll be changed in ways you couldn't even imagine.
Sure, you can leave the swamp, but most who do, wish they never left.