After 6 x 04
Red Jhon is the name of the  secret cospiracy between CBI,FBI and police ... Red Jhon should be their tag.
" Tiger,Tiger " is their secret acces code and we all know that came from "Red Jhon" when he saved P.Jane .
Other informations come from the final dialogue when Bob talks about his brother ..
SuSpects : Gale Bertrame , Reede Smith , Thomas Mcallister ...