The first time around, Justin played a troubled youth whose brother was killed.
In his siguiente appearance, on February 17th, his character "will call Nick (played por George Eads) to tip him off that he’s in imminent danger," according to TVLine.
JB tweeted about it saying:
"on set...where? let's just say Im back to my evil ways. #badass"
If you're a csi o Justin fan, tu will not want to miss this! ;)
Source: celebuzz