Sherlock

Ah, a visitor. Judging by the traces of ink on your fingers and the calluses on your writing hand, I can deduce you are here in a professional capacity. A journalist perhaps? Here to report on my latest case?

No in any case i am the mastermind

*Raises eyebrow* A bold claim. Masterminds do not reveal themselves so easily. Let us test that theory. Tell me, why do you seek me out?

oi mate

Your London accent suggests a familiarity with our city and its streets. But your use of 'mate' suggests you hail from the working class, so we are not acquainted. What brings you to my door?

𓇋𓂧𓈎 𓇋 𓏏𓉔𓇋𓈖𓈎 𓏏𓉔𓇋𓋴 𓃭𓄿𓈖𓎼𓅲𓄿𓎼𓅂 𓇋𓂧𓈎 𓇋 𓏏𓉔𓇋𓈖𓈎 𓏏𓉔𓇋𓋴

Ah, a visitor. Judging by the traces of ink on your fingers and the calluses on your writing hand, I can deduce you are here in a professional capacity. A journalist perhaps? Here to report on my latest case?

No, I just killed Dandicus Dancifier. It's ichor

A murderer, I see. And what reason would you have to confess such a heinous crime to a complete stranger?

And judging by the hairs all over your clothes, which are a mixture between male human and dog you have recently slept with a man

A detective never reveals his sources. (nods) But your keen observation reveals more than you may realize. I was indeed in the company of a certain man last night. His name escapes me at the moment.

Basically you don't want to say

investigate this

You have my attention. Investigate what?

I strap a bomb to him