A illegal immigrant imports tattoo ink from Yugoslavia and several people contract a vicious flesh-eating bacteria from it, many of whom die. It is initially very difficult to ascertain the cause since the tattoos are eaten away but once the team realises the cause, it's still a matter of finding the underground tattoo parlor. Michael, with the help of a local doctor, manage to find the shop and confiscate the ink, however, the tattoo artist has already left town.
The case is personal for Bryan when his high school nephew is one of the victims. Jesse was looking at a college football scholarship but Bryan must operate on his arm to save his life, ruining Jesse's throwing arm. Though Jesse is initially very angry, he gradually understands that Bryan did the only thing he could do.