Navigating the expansive wasteland of Fallout: New Vegas leads players to unique storylines and complex character dilemmas across the Mojave. Among these side missions, Guess Who I Saw Today stands out as a crucial quest that determines the future of Jacobstown and its Nightkin residents.

Starting the Quest in Jacobstown

To begin this mission, travel to the peaceful super mutant sanctuary of Jacobstown nestled in Mount Charleston. Head into the main lodge to locate Doctor Henry, a former Enclave scientist working on a cure for Nightkin mental instability.

Doctor Henry requests your help in finding the root cause of Nightstalker stealth mutations in the area. You can recruit Lily Bowen as a companion before heading toward Charleston Cave to retrieve a chewed Stealth Boy.

Conducting the Experiment

After recovering the item from the dangerous cavern, return to Doctor Henry in the Jacobstown lodge. You must convince Lily to participate in an experimental test using the prototype Stealth Boy Mark II.

During the procedure, an aggressive Nightkin named Keene interrupts the session and demands the prototype specs. Resolving this conflict requires careful dialogue choices or high skill checks to prevent violent bloodshed.

Dealing with Keene and the Nightkin

Passing an 80 Speech skill check allows you to convince Keene to stand down without causing harm. Alternatively, you can surrender the prototype specs to let him leave peacefully or engage his group in combat.

How you handle Keene directly influences the stability and long-term fate of the Jacobstown community. Choosing peaceful dialogue ensures the town remains safe while allowing Doctor Henry to continue his research.

Deciding the Final Outcome

Once Keene is dealt with, Doctor Henry asks for your guidance on how to proceed with his mental cure. You can suggest continuing the experiments, stopping them to safeguard Lily's health, or passing a 90 Science check for a safer testing method.

Balancing companion safety with scientific breakthroughs provides a satisfying conclusion to this memorable Mojave storyline. Completing this quest provides valuable experience points and shapes the regional ending for Mount Charleston.