Rebecca takes the spotlight and an NZT pill
Every drug-enhanced crime-solving FBI consultant needs a partner.
(Think Sherlock and Watson, Mulder and Scully, any TV procedural from the last 20 years.)
However, when we last leftLimitless,Rebecca had laid it all on the table.

Credit: David M. Russell/CBS
She put a gun and handcuffs on Brians dining room table.)
Shes finally put the pieces together about Brians involvement with Sands and Morra, and she needs answers.
They have an advantage.
As Brian says when she takes her pill: Its not fair.
You, on NZT.
She sees Brian as a liability and wants to bump him off, but Sands is reluctant.
(After all, Sands and Brian did share a magical evening of rescuing a kidnapped child.
All she remembers is that she was contacted by two men, Hawkes and Huston.
An address or a physical description would be great, but sure, a cigarette butt works, too.
Sands message doesnt get there fast enough, though, and Rebecca gets shot in the shoulder.
So, they fashion a homemade EKG machine, and Huston happily spills everything he knows about Sands.
The only thing left to do is bring Sands into custody.
So whatever Brian may think, I highly doubt his time at the FBI is over.