Longevity Initiative - [s2e17] The

The titular initiative is a secret research project funded by tech billionaire Roger Hobbs , who is obsessed with achieving human immortality.

It is Liz's 31st birthday (though some sources note a discrepancy where she might be turning 30). Red gives her a bottle of wine made from grapes she once harvested with her adoptive father, Sam, highlighting his long-standing presence in her life. [S2E17] The Longevity Initiative

Dr. Julian Powell , the lead scientist, has been abducting disabled patients to experiment on their frontal lobes. The titular initiative is a secret research project

After escaping from German enemies and his former handler, "The Major," Tom returns to Washington, D.C.. The episode ends with him appearing at Liz’s apartment, telling her he has nowhere else to go. The episode ends with him appearing at Liz’s

Cooper faces a moral dilemma when Tom Connolly hints that the investigation into Hobbs—who has ties to the medical trial saving Cooper’s life—could jeopardize his treatment. Under pressure, Cooper ends up protecting Hobbs from the full consequences of the investigation.

The FBI Task Force is sent to investigate a series of gruesome murders involving victims with portions of their brains removed.

Powell isn't actually trying to discover immortality for Hobbs. Instead, he is using the billionaire's funding for his own goal: restoring the memories and cognitive functions of his fiancée, who suffered severe brain damage in a car accident he caused.