As "Extant" delves deeper into season two, fans are eager to know how Molly Woods will tackle the latest mystery at hand. As things get murkier and messier, seasoned viewers of "Extant" should stay tuned to see whether Molly can finally find a cure that eliminates alien hybrids.

According to Yahoo! News, Molly Woods searches for a cure against the alien hybirds by creating a virus. The promotional clip also shows David Morrissey's character, Tobias Shepherd, ordering her to find a cure in the form of a virus. Will Woods be successful in doing so? Can she truly create a virus that eliminates this new species?

However, the plot takes a macabre turn when Molly makes a startling discovery. She learns that aliens are communicating with humans using their DNA. They are communicating with human beings through hidden messages. This revelation is sure to have many repercussions for the astronaut.

While Molly is busy deciphering what her latest revelation means and searching for a cure, Lucy helps Ethan get away from Charlie so that he can regain the memories of his mother.

The upcoming episode is aptly named "Cracking The Code" and will see Woods in action. Fans will also see David Morrissey's character, Lucy, Ethan and Charlie in action as the episode premieres this Wednesday.

The preview clip also provides another spoiler for episode four. The video shows Jeffrey Dean Morgan's character, JD Richter, asking for Molly's help. Later on, Molly is seen locking lips rather aggressively with JD before he stops her and shouts her name. What could be going on?

"Extant" will be moving its time slot from 10 p.m. on Wednesday nights to 9 p.m. as per a move by CBS, reports TVLine. Hence, fans should tune in to "Extant" on Wednesday, July 22 at 9 p.m. instead of 10 p.m. to watch episode four.