"World News Tonight With David Muir" Podcast - October 21, 2014

Unlikely Recruits: Three teenage girls from Colorado have been arrested for trying to join ISIS.

Behind Bars: "The Blade Runner", Oscar Pistorius, has been sentenced for killing his girlfriend, but does her family think justice was served?

Asleep Behind The Wheel?: A disturbing new report on how a lack of sleep can have dramatic consequences on the road.

Remembering An Icon: Oscar De La Renta has died at the age of 82. We look back at his contributions to the fashion industry. 

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