Sentence

図星ですか?

図星(ずぼし)ですか?
Is that it?
Sentence

別の理由があるね?どう?図星でしょう?

(べつ)理由(りゆう)があるね?どう?図星(ずぼし)でしょう?
There's another reason, isn't there? Well, how did I do? I bet I hit the mark.