"Teen Wolf" Episode 17 titled "Credible Threat" was expected to reveal the identity of The Beast of Gevaudan but none was revealed; hence in Episode 18 titled "Maid of Gevaudan," which although will tackle the past of The Beast, may finally unveil who is currently inside the Beast.
Hypable, in its report, said that the person inside the Beast is potentially a teenager, and although not yet confirmed whether it's a male or a female, all that is known is that his/her shoe size is 10. This person would be normal by day and unknowingly, it he/she transforms into the Beast when night comes.
So who could the Beast be? According to Hypable, the best guess and the most ideal scenario for the fandom is Allison Argent. The report highlighted that having Allison Argent return to "Teen Wolf" may just reinvigorate the show. It added that while Crystal Reed may have returned to play another role, that is Marie-Jeanne Valet who is also an ancestor of Allison, it may be possible that Crystal Reed has filmed "some extra scenes" as Allison Argent.
Hypable explained that this theory is highly possible as having resurrected the Beast, the Dread Doctors, in much the same way, may have also found a way to resurrect Allison Argent. Since Theo was able to inject his chimeras with fluid from the man in the tank in order to bring them back to life, with the same fluid carrying the man's DNA, Allison may have been also resurrected and turned into a chimera.
"Why pick her particularly?" Hypable wrote. "The Dread Doctors want the Beast to remember who it is, and what better way than to pick a girl descended from the one that first killed him, who also happens to look identical to that woman?"
Carter Matt, on the other hand, commented in its report that bringing back Crystal Reed in "Teen Wolf" may be "an inventive way to tie into some of the show's history while also discussing the history of the Beast of Gevaudan."