The Taxman Cometh

From the introduction:

It is Tax Day. The town council would like to hire the PCs to collect the taxes from a local mage, Circe the Red. As always, Circe is reluctant to pay her yearly taxes. She has barricaded herself in her underground lab, setting defenses against unwelcome tax collectors. If the party can work their way through her lair and officially present to Circe the council’s Tax Assessment Writ, she will capitulate and pay her taxes. At least she has in past years. To gain their reward, the party must deliver the Tax Writ to Circe by the end of Tax Day.