Yes, well.

For a moment he doesn't say anything, and just levels Lucius with a faintly accusatory glare - not wholly unusual, for Severus Snape, unprovoked or not. He is suddenly (as expected) uncomfortable; Lucius might be his friend, or might have been, or maybe they only pretended so that some facade of propriety could be catered to at least halfway - but he's Wrong, some amalgam, from far away. (Or perhaps Severus is.)

Finally-

"Took your bloody time leaving Hellsing's territory."