Well, I don’t want to spoil you but… If you must be spoiled, then you must be spoiled! Lestat doesn’t care about Santino but I do.

Let’s say What goes around comes around.

Longish complicated story short, Santino is killed pretty gruesomely (although quickly!) at the end of Blood and Gold, for past crimes he committed against Marius (kidnapping vampnapping? fledgnapping? idk Armand and turning him into an evul Child of Darkness, attempting to kill Marius and actually murdering innocent Boys of the Veneto at the same time, etc.)

So Santino, well, his uppance did come. He is dead as a doornail, my friend.