Noted microbiologists are dying at an alarming rate as Stephen tries to learn the cause of death of the beautiful woman found in his apartment. Yasim suspects that her late husband, Michael, stumbled on the secret before being blown up by a landmine in Afghanistan.

Reunited with Michael, who is back from the dead, Stephen and Yasim agree to help him find the truth about a mysteriously contaminated hepatitis B vaccine. Stephen ends up stripped of his identity and homeless.