Trap. I'll bet it's a trap, because he won't discount the use of other magic users to try and find them if I pay them enough to not breathe a word about what the situation is.

[Alucard finally does retract his claws, and then his arms are crossed over his chest.]

It's probably safer to work under the assumption of trap as well. I know it will...[keep his rage checked.] curb my impulses.