Sorry, I haven't checked what incident or what words of yours aroused his suspicion, so I'll have to leave that part blank for now. However, just by looking into where that unscrupulous lawyer went and who he met yesterday, that won't affect my story.
At this point, the unscrupulous lawyer finally began to doubt you and secretly took the bowl you used after dinner, planning to find a way to send it abroad or to Tokyo for DNA testing. Unfortunately for him, while he was cautious of you, he didn't take into account the greedy housekeeper, who saw what he did.
The cook and the maid were confused about the missing bowl, but you and the greedy housekeeper immediately guessed what he was up to. Thus, there was no choice but to bite the bullet and simply finish him off.