The secret of Malone Clan

"Do you know something about that?" I looked at Markus, at the same time he nodded at my words, and looked down at the little son he was still holding in his hands. He started stroking Jace's little head and looked up at the figure in the black gown. 

"I had thoughts that this could be the same unknown group of vampires who killed Igor the Black," he said, still stroking his son's little head. Jace's head was pressed to Markus's chest and turned in my direction, so I could clearly see how happy Jace was that his daddy was holding him. They are clearly Markus's sons. 

"Could be, however, how we can prove it? There was no evidence or anything else that can prove that's the same group of vampires," the figure in the black hood said. 

"I bet there's information in the Council's documents," Markus said as mysteriously as ever, but his words suddenly gave me a hint to the key to the situation.