After a mosque is vandalized, Mannion questions the mosque president, who reveals that the mosque has been receiving threats. Meanwhile, Temple and Debreno investigate two other hate crimes - both with similar scenarios - involving a rabbi and an African-American respectively. Now, before racial and ethnic tensions escalate, Mannion and his team must get to the bottom of these crimes - unaware that the perpetrator is the last person they would suspect. (CBS) (thetvdb.com)