Cassius frowned down at her, the corner of his lips curving downwards for each fraction the corner of her lips turned up. Or, more truthfully, it tried to. A part of him wanted to smile again. An imp, this one was truly a saucy little imp. It was in the smile and the straight spine. You could learn a lot about a person by watching them. Cassius knew how well looks could decieve yet there were certain things, such as ones carriage and ones inner grace, that could not be faked.
"I am in need of an ancient tome. Of Arithmancy. I do not exactly recall the name of it." He said politely, his tone as neutral as her look. However, his mouth did twitch upwards ever-so slightly.