Imagine waking up on a crowded train platform in a foreign country. You don’t know where you are or even WHO you are. That’s what happened to Chicago author David Stuart MacLean. His new book, The Answer to the Riddle is Me: A Memoir of Amnesia, chronicles how he has spent much of the past decade trying to piece together the fragments of what he remembers of his former life. He joins us with his story. Read an excerpt and view a slideshow.

We take a closer look at the international popularity of the PBS megahit Downton Abbey with Rules, Britannia author and BBC America blogger Toni Hargis and Chicago Tribune columnist Eric Zorn.

In tonight's Viewer Feedback, we share your comments on one disabled young man's triumphant story and your thoughts on the Affordable Care Act.

This week’s visit from the Polar Vortex was more than snowy and bone-chillingly cold; it was expensive as well. Read an article.

Judy Baar Topinka is running for re-election as Illinois Comptroller in 2014.

Sheila Simon is running against Judy Baar Topinka for Illinois Comptroller in 2014.

Mike Frerichs is throwing his hat in the ring for Illinois Treasurer in 2014.

Bob Grogan is throwing his hat in the ring for Illinois Treasurer in 2014.

Tom Cross is throwing his hat in the ring for Illinois Treasurer in 2014.

Jesse White is Illinois' current Secretary of State.

Paul Schimpf is running against Lisa Madigan for Illinois Attorney General in 2014.

Lisa Madigan is running for reelection as Illinois Attorney General in 2014.

Joel Weisman and his panel of journalists discuss the week's top headlines.

Joel Weisman and his panel of journalists consider the plea from new U.S. Attorney Zachary Fardon for more funding. Watch the web extra conversation.

A country concert, a famous house tour and a circus festival; Chicago Tonight knows what’s going on this weekend.