Ruby is the only Spectrum agent (other than Bradley Baker) that has seen The Count, and been able to tell the tale. The Count is believed to be the mastermind behind the 4 crimes throughout the books. He is the ringmaster of Hogtrotter, Baby Face Marshall, Lorelei Von Leydon, Valerie Capaldi and possibly Marnie Novak. (Lorelei's mother).
Spectrum says "you know it's the Count when he's dangling you over a bubbling volcano instead of dropping you right in".