CSI: NY › Season 7

S7 E4: Sangre Por Sangre

When the leader of a powerful New York gang, El Puño, is found murdered, the CSIs must find the killer before a street war with a rival gang breaks out. Mac asks the co-founder of El Puño, Luther Devarro, a man he put behind bars years before, for help.

Air date	Oct 15, 2010
Runtime	45 minutes
TMDB rating	★ 7.8/10