The scream came right above his ear, so it would be impossible for Eric not to hear that scream.
That's right!
The one to scream was no one else but Sultan's First Wife Yildiz!
Even though she was the first one to assault him, even though she was the first one to make a move, even though she was the first one to actually drug him and bamboozle him with aphrodisiac.
Despite all that, she was the one to scream for help and alarm the whole Palace, as if she was being attacked by a beast.
Of course, in this case the beast was no one else but Eric himself, and after all the dosage he had been filled with he wasn't much different from a lust beast or demon.
The sudden shout and shock of the situation would be enough to detoxify a man, or perhaps allow Eric to regain a bit clarity and senses to stop and have a look at her.