[s2e17] The Longevity Initiative File

Red eventually tracks down Powell, hoping the doctor can help recover Liz's lost memories of the fire. However, Powell admits his research failed, and he commits suicide in front of Red. Personal Storylines

The titular initiative is a secret research project funded by tech billionaire Roger Hobbs , who is obsessed with achieving human immortality. [S2E17] The Longevity Initiative

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. Red eventually tracks down Powell, hoping the doctor

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. It is Liz's 31st birthday (though some sources

Dr. Julian Powell , the lead scientist, has been abducting disabled patients to experiment on their frontal lobes.

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

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.