The so-called Sun Gym Gang first kidnapped and tortured a wealthy man into signing over all his assets to them before they set their sights on Frank Griga and his girlfriend, Krisztina Furton.
Missy MacIvor told her sister-in-law she was seriously creeped out by a local gas station attendant. Days later, she and her husband were slaughtered in their home.
Amid rumors of other planned attacks around the U.S., authorities are working through mountains of information to determine which threats are credible.
