"Limitless" Season 1 will return after a week's break on April 19, 2016. The CBS series last aired episode 20, "Hi, My Name Is Rebecca Harris," on April 5, and now, viewers can watch episode 21, "Finale: Part One!" this Tuesday. As the name suggests, fans can assume that the series is inching towards its finale and this week's episode will be the first part of the season finale.
In episode 20, we saw Rebecca confronted Brian, and he finally admitted about spying for Morra. He also told her that it was Sands who killed her father. Then, Rebecca teamed up with Brian and decided to take the NZT pill for the day, so that they could take down Sands together.
The duo found Houston's burn book that Brian hid with the information about the NZT purge. The book led them to a former Morra employee, who was addicted to NZT and she gave them a cigarette butt with the DNA of Rebecca's dad's killer. But, as they are leaving from there, Rebecca got shot by Sands' sniper and Brian did field surgery to heal her.
Finally, at the end of the episode, the two of them managed to lure and arrested Sands.
In episode 21 we will see how Brian feeling the crunch and lack of resources, when a new enforcement comes to force against NZT. According to the synopsis of the episode, NZT floods streets of New York City and it could become a national epidemic. So, the FBI will try to get situation under control and act against the lab producing the drug.
Now there's no promo for the upcoming episode yet, but it looks like Brian will have a tough time looking out for Piper, without NZT.
So, does this mean Brian will finally solve a case without using NZT?
Plot synopsis for "Finale: Part One!" (via TV Guide) reads: "The FBI's worst nightmare comes true when NZT floods the streets of New York City and threatens to become a national epidemic. As efforts are made to stop it from spreading, a joint manhunt is launched to find the lab producing the drug; at the same time, Brian struggles to adjust to his new reality when he lacks the resources to continue searching for Piper."
"Limitless" Season 1 episode 21, titled "Finale: Part One!," will be aired 10 p.m. Tuesday, April 19, 2016, on CBS.