After a list with the real identities of undercover bureau operatives leaks, Brian develops a personal connection with FBI Agent Lucy Church, a tenacious rule-breaker, when he helps her finish a field case before she's exposed. Also, Sands makes a surprising move to end Rebecca's investigation into Senator Morra.

Limitless, based on Relativity's 2011 Bradley Cooper thriller, picks up where the movie left off and follows Brian Sinclair as he discovers the power of the mysterious drug NZT, and is coerced into using his newfound drug-enhanced abilities to solve weekly cases for the FBI.