"Blast it, Lupin, these people are not your band of criminals! They care more about people than they do about your schemes."

[He draws a deep breath, to rein in his frustration.]

"... I told you I would not allow you to toy with them, and I was sincere. I did not wish for it to come to this, but you seem unwilling to be reasoned with.

If you go on this mission, I will see to it that you are not welcome in this house again. By force, if I must. You will not abuse the trust of the people I care about."