Limitless e20
"Limitless" Season 1 episode 21, titled "Finale: Part One!," will be aired 10 p.m. Tuesday, April 19, 2016, on CBS.Facebook/ Limitless

"Limitless" Season 1 is just a couple of weeks away from its finale. While the plot is already getting really intense, episode 20 is sure to set the grounds for the two-part finale episodes.

CLICK HERE to watch "Limitless" episode 20, titled "Hi, My Name Is Rebecca Harris," live. To watch it later online, CLICK HERE.

In episode 19, we saw Bradley Cooper returned as Senator Edward Morra, as he reached out to Brian, who was placed under surveillance by both FBI and Sands. While Brian also solved the case of a man who was murdered and had his kidney stolen, Rebecca started investigating Brian's meetings with Sands.

The episode, "A Dog's Breakfast," also showed how Sands got its hands on the supply of NZT from Piper, even before Brian and how Brian revealed to Senator about Piper and things he possessed. But at the end of the episode, Rebecca found out about Brian's meeting with Morra and she confronted him.

In episode 20, we will see Rebecca taking the NZT pill for the very first time. The synopsis for "Hi, My Name Is Rebecca Harris" teases that the FBI agent will finally discover the truth behind her father's death. To find out what really happened, she took the pill and used the new-found intelligence to seek justice for his murder. Meanwhile, Sands is said to be planning something really dangerous against Brian, in hope to make his newest plans successful.

The promo of the upcoming episode shows Rebecca calling Brian to ask about the NZT pill, he tries to stop her but she still goes ahead and takes it. Then, Brian is seen teaching her how to make the most out of the NZT pill. At the end of the clip, we see Brian shouting at Rebecca to duck down, however, she gets shot down by a sniper.

Will Rebecca have to pay the price for taking the NZT pill with her death in episode 20? We will have to wait and watch.

Plot synopsis for "Hi, My Name Is Rebecca Harris" (via TV Guide) reads: "Rebecca wants justice after learning the truth about her father's death, and is willing to break the rules and take NZT for the first time to get it. Meanwhile, Sands makes a dangerous move against Brian in order to ensure the success of his new initiative."

"Limitless" Season 1 episode 20, titled "Hi, My Name Is Rebecca Harris," will be aired 10 p.m. Tuesday, April 5, 2016, on CBS.