At the end of episode 10 of Game of Throne's season 4
Tyrion Lannister kills his former lover Shae and his father Tywin Lannister.
does Varys, who helped Tyrion to escape, join him when he heard the bells from the castle, which implied that someone (important) had died. Varys did not support any murder, all he knew was, that he shall help Tyrion to escape so he would not be found guilty and eventually executed. Especially not, because Jamie would not give him away, as that would mean that Jamie would have been guilty as well.