In 2011, Wisconsin's legislative redistricting process was anything but routine. It included secret meetings, deleted documents and a case that went all the way to the U.S. Supreme Court.

As Wisconsin prepares for another redistricting battle at the state Capitol and in the courts, WPR's new investigative podcast "Mapped Out" dives into how things went down a decade ago — how the process was supposed to go, how it really happened, and how those decisions affected the balance of political power in the state for years to come.

Hosted by special projects reporter Bridgit Bowden and Capitol bureau chief Shawn Johnson, "Mapped Out" is a six-part series debuting in September that will give the lowdown on Wisconsin's redistricting past and let listeners know what the next set of maps could mean.

Episode 1 is coming Wednesday, Sept. 29.