First twelve episodes from the fourth series of the popular American television crime drama. On the night shift of the Las Vegas Criminalistics Bureau, the CSI team investigate the forensic details that can make all the difference between an unsolved crime and a successful arrest. In this series, the team work around the clock to stop a serial killer who is preying on couples, discover the mummified corpse of an old woman in a wardrobe, and try to solve the case of a young man found dead on a construction site. Episodes are: 'Assume Nothing'; 'All For Our Country'; 'Homebodies'; 'Feeling the Heat'; 'Fur and Loathing'; 'Jackpot'; 'Invisible Evidence'; 'After the Show'; 'Grissom Versus the Volcano'; 'Coming of Rage'; 'Eleven Angry Jurors' and 'Butterflied'.