Lucius pauses there, attempting to read any lie in Severus' expression and tone, but ultimately finds nothing sufficient to challenge. So, he takes up his cane and purchases, because if anything, he at least got what he officially came for. Sleeping dreamlessly for ten hours is going to be fun.

There's a silver lining for everything.

"Well, if you ever felt moved to enlighten me further, you know how to find me," he says in the moment before he will be making for the exit.