Season 4

01 TB or Not TB Episode 12nd March 2008 Bob is back. His brain surgery caused an infection which leaves him in a bad shape when found. He is put into a medically-induced coma. The team travels to Mexico where an antibiotic-resistant strain of TB is killing the Zapatista Revolutionaries. 02 La Consecuencia Episode 29th March 2008 Carlos has disappeared for two days and David goes back to Mexico first to find Carlos and second help the Mexicans to fight the drug resistant TB that is killing tens of Mexicans in the region. Mayko and Rachel work non stop to find a cure to the TB and to find what is causing the inhabitants of Hudson Point, Illinois to be insensitive to pain. 03 Hep Burn and Melinkov Episode 316th March 2008 As if being HIV positive wasn't enough, Wes is infected accidentally with a needle full of Hepatitis C. 04 The Kiss Episode 423rd March 2008 Bob continues to be haunted by memories of his time at Roth's secret lab; Wes insists that Rachel inject him with a highly experimental mutant red blood cells to fight the virulent Hep C; a mysterious disease that's causing brain inflammation in a small town appears to be contagious. 05 Suspicious Minds Episode 530th March 2008 After an experimental treatment for Hep C nearly kills him, Wes quits NorBAC to enroll in a cutting edge HCV program in Stockholm; a racist city councilor claims his daughter was poisoned by Muslim extremists; the FDA is willing to fast-track some drugs in order to save an immune-deficient woman who was infected with smallpox. 06 Race Fever Episode 66th April 2008 NorBAC investigates a mysterious outbreak that is hospitalizing cyclists on the course of the Tour Cyclo Quebec. Meanwhile, Bob embarks on a controversial hyperbaric chamber treatment to deal with his brain infection and memory loss. 07 Hearts and Minds Episode 713th April 2008 A pharmaceutical company comes under fire when its newly-marketed immune suppressing drug triggers a high incidence of congestive heart failure; David attempts to find a replacement for Wes; Bob suffers a seizure that triggers romantic memories of a girl named Nina. 08 Brood 14 Episode 820th April 2008 Bob finally tracks down Nina, but on a visit back to Roth's lab he makes a gruesome discovery that suggests the experiment on Nina is about to go terribly wrong; the team investigates unusual crow attacks that appear to be targeting military airports. 09 Unbottled Episode 927th April 2008 A terrorist cell infiltrates the NorBAC lab and forces the scientists to produce a deadly measles mutation to be used as chemical warfare. 10 What It Feels Like Episode 104th May 2008 David ignores protocol and hires his new lover, Enuka; Mayko is contacted by the parents of a sick child who believe she's the only one that can help. 11 Bloodless Episode 1111th May 2008 When a young boy is murdered, forensic evidence leads the NorBAC team to investigate the unlikely existence of a prehistoric cat that disappeared from North America 10,000 years ago; a dramatic development complicates NorBAC's plans to deactivate Nina's Jacobson's organ. 12 The Sounds of Science Episode 1218th May 2008 David discovers that Roth has given the world's most powerful leaders the stem cell treatment that he now knows leads to violent paranoia; while investigating a mysterious outbreak in Moldova, Carlos uncovers a horrific act of atrocity. 13 The Truth Episode 1325th May 2008 Season 4 finale. A glimpse into the future renews David's determination to stop the birth of the first human clone.