shopping, eating, socializing. a trip to the mall is an escape of weekends and not just in america. in kenya, the upscale and modern west gate mall was the place to unwind at the end of the workweek. it was the last place you would expect something like this. gunshots, explosions, armed men taking over every floor, methodically shooting anyone in their way. that was the unbelievably brutal scene that played out in front of a shocked world september 21st, 2013. just after the smoke cleared, dateline traveled to nairobi. tonight we'll take you inside the mall attack with scenes of how it unfolded and details of those who lived through it.