A 12-year-old boy is found dead in his room with his karate belt wrapped around his neck. The boy had never exhibited suicidal tendencies, but he had been grounded on the weekend of his death for trying to skip school. Dr. G looks for evidence as to whether or not the boy's death was a suicide.A 55-year-old biochemist on sabbatical from Russia collapses and dies while eating lunch with colleagues. When the Russian Embassy and the FBI take interest in the man's death, Dr. G suspects that foul play may be involved.