Defence lawyer Barry Roux listens as Prosecutor Gerrie Nel cross-examines Olympic and Paralympic track star Oscar Pistorius in the North Gauteng High Court in Pretoria, April 11, 2014. Pistorius' three-day cross-examination reached a dramatic climax on Friday when a prosecutor challenged the double-amputee sprinter repeatedly as to why his girlfriend failed to scream when she was shot four times through a toilet door. REUTERS/Craig Nieuwenhuizen/Pool (SOUTH AFRICA - Tags: SPORT CRIME LAW ATHLETICS)