FrontierVille: Detective Agency Collection rewards muddy Footprints as prize

As usual, along with the release of a new building in FrontierVille comes a new Collection that can be completed by earning the appropriate items when whacking the frame of the new building, or when collecting that building's Daily Bonus. Such is the case with the new Detective Agency, and this new Detective Agency Collection.

There are five new items to keep an eye out for:

Invisible Ink
Walkin' Shoes