Non-PRO Spanish to English Other Poetry & Literature Literature.

I would like to know the best translation of this phrase from Latin American Spanish into American English.

Translator colleagues from Spain, feel free to send me your suggestions as well. This is a translation about Mythology.

It's about the story of Theseus and the Minotaur.

I hope that all of you are healthy and
safe from Covid19.

Here is the full paragraph for your review:

Y así, Teseo, el héroe, abrió la gran puerta del laberinto. Supo inmediatamente que la bestia notaba su presencia, que como una gran araña en la sombra sentía hasta el más ligero movimiento en su intrincada red. Teseo se quedó totalmente inmóvil, oía los latidos de su corazón, ¿o era el de la bestia?