"Three handled it, but I've found five. If they're a smaller unit connected to something else, they're being properly discreet, but one of them will know."

Severus isn't sure how much Lucius would know about his abilities as a mind-reader specifically, but he's sure the older man at least has a ballpark idea of Severus being remarkably talented at interrogation. It's less finesse and more adept at creatively nightmarish cruses. In that respect, they're covered.

But he'll need someone to make sure no one sneaks up behind him while he does it.