Just takes one to get the party started. Then it is just a matter of playing follow the leader.

http://i.imgur.com/BJ4nt.gif

now the leader is behind

what movie is that damn screen from

my bet is cop crime related series, some CSI clone

quite right, Criminal Minds
http://www.imdb.com/title/tt0452046/
no idea what episode though

cheebydi