Shortly after 11:00 p.m. ET yesterday, Troy Davis was executed in Georgia after a last-minute appeal to the Supreme Court was denied. Social media sites were filled with comments about Davis' death...most expressing shock and sadness that he was killed. Tonight we'll hear from a reporter who witnessed Davis' final moments and we're also asking why America refuses to let go of the death penalty. Mark will also speak with Betty Anne Waters about her own personal battle against the death penalty. When her brother was wrongfully convicted, she became a lawyer to clear his name, a story that inspired the movie "Conviction" starring Hilary Swank. Plus - we're looking at the enduring popularity of capital punishment: 64 percent of Americans support it. Tonight - one supporter makes the case for the death penalty.

We're also following the latest economic news. World markets are plummeting - the TSX lost more than 400 points by mid-afternoon - after an economic warning from the U.S. Federal Reserve that the economic problems could last for a while. The turbulent markets, the stubbornly-high U.S. unemployment rate, and sky-high debt levels has some comparing the economic crisis to the 1930s Great Depression. We'll take a closer look at that angle tonight.

Plus, his wallet was stolen 20 years ago. And Patrick Guest has spent a good part of the past two decades, fighting to get his identity back. Tonight - his incredible story that serves as a warning to everyone.

Tune in at 8 p.m. ET on CBC NN.