Drea Garcia

When a hieroglyph found on a deceased homeless man's body matches ones from bodies found a few years ago, the unit is called in to investigate.

Neal's gravely ill mother, Asra, exhibits mysterious symptoms that prompt a quarantine in Trauma One; Neal and his father -- a neurosurgeon -- cannot agree on medical treatment for Asra.

Team Scorpion are blackmailed into breaking into the United Nations to help with the assassination of an arms dealer, while Sylvester tries to protect Megan's wishes.