1 Head Death: Well, thanks for nothing. What do I owe you?
1 Receptionist: It's quite simple really. Through the door.
2 Head Death: Oh for crying out... Put it on my tab.
2 Receptionist: Please go right in. Yes, we know.
3 Head Death: I hope I never have to deal with you Paradox lot again.
3 Receptionist: We've been expecting you. Of course.
4 Head Death: Huh?
4 Receptionist: How may I help you? Hello, sir.
4 Head Death: I hate you guys.

Notice that the door has a keyhole.

It's important to lock the Head Paradox's office overnight.

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2021-12-04 Rerun commentary: The Paradoxical receptionists's utterances are not only reversed by speech bubble, but the sentences within each speech bubble are in reverse order too.

I decided not to go as far as reversing words within sentences, nor letters/phonemes within words, though. There's a certain point of no return when it comes to obfuscation.