Rockstar Games is famous for filling the Grand Theft Auto series with hidden content, Easter eggs, and mysteries—and GTA V Story Mode is no exception. Beyond the main missions, Los Santos and Blaine County hide secret missions, alien encounters, and strange events that only the most dedicated players can discover.

This guide will reveal the top hidden secrets in GTA V Story Mode and explain how to unlock them step by step.


1. 🛸 The UFOs of San Andreas

GTA V hides multiple UFOs across the map, but they only appear under specific conditions.

How to unlock UFOs:

  • Collect all 50 Spaceship Parts for Omega’s side quest (only available to Franklin).

  • Complete the main story (100% game completion).

  • Visit specific locations at night and during stormy weather.

Known UFO Locations:

  • Mount Chiliad (after 100% completion).

  • Fort Zancudo Military Base (appears at 3 AM).

  • Sandy Shores above the hippy camp.

💡 Fun Fact: The UFOs are non-interactive, but seeing them is one of the biggest GTA V secrets.


2. 👽 The Frozen Alien Under the Bridge

Early in the game, during the Prologue mission, players can spot a frozen alien trapped in the ice.

How to unlock:

  • Replay the Prologue mission.

  • When Trevor drives across the frozen river, look carefully beneath the bridge.

This is Rockstar’s nod to the alien mysteries that run through GTA V.


3. 🌄 The Mount Chiliad Mystery (Murals & Jetpack Theory)

One of the longest-running mysteries in GTA V is the Mount Chiliad Mural, located at the cable car station.

How to unlock/explore:

  • Reach 100% completion to unlock UFO sightings here.

  • Interpret the mural, which shows UFOs, a jetpack, and an alien egg.

  • Some players believe it hints at hidden missions that may never have been officially added.

💡 This remains one of the most debated secrets in GTA history.


4. 👻 The Ghost of Mount Gordo

One of GTA V’s creepiest Easter eggs is the Ghost of Jolene Cranley-Evans.

How to see the ghost:

  • Go to Mount Gordo between 11 PM – 12 AM (in-game time).

  • Look at the cliffside through a sniper scope.

  • A ghostly figure appears with “Jock” written in blood on the rocks.

This references in-game lore: Jolene’s husband, Jock Cranley, is implied to have murdered her.


5. 🚀 The Space Docker (Alien Car)

After collecting all 50 Spaceship Parts as Franklin, you’ll unlock the Space Docker, a custom vehicle with glowing parts and alien-like sound effects.

Steps to unlock:

  • Trigger the “Far Out” quest by meeting Omega in Sandy Shores.

  • Collect all 50 spaceship parts scattered across the map.

  • Return to Omega for the reward.


6. 🧟 The Infinity Killer Mystery

Rockstar hid an entire serial killer storyline in GTA V.

How to unlock/explore:

  • Collect clues and notes around Los Santos mentioning “Infinity 8.”

  • These refer to Merle Abrahams, a killer who claimed to murder 8 victims.

  • His house and writings are scattered around Sandy Shores and Blaine County.

While it doesn’t unlock a mission, it’s one of the game’s darkest hidden mysteries.


7. 🎶 Hidden Music & Secret Radio Stations

In Story Mode, some secret audio tracks and stations only appear under specific conditions:

  • FlyLo FM & Exclusive Mixes → Only available on certain versions of GTA V.

  • Secret audio tapes → Found in GTA V: Expanded & Enhanced editions, linking to GTA VI.


8. 🧪 Hidden Missions & Strangers

Apart from the main story, GTA V has secret Strangers and Freaks missions:

  • The Epsilon Program (Michael only) → Unlocks the famous “Kifflom!” missions with secret robes and cash rewards.

  • Omega’s Alien Parts (Franklin only).

  • Nervous Ron & Weed Missions (Trevor only).

💡 Completing these adds to your 100% game completion progress.


9. 💀 The Murder Mystery (Film Noir Unlock)

On PS4, Xbox One, and PC versions of GTA V, Michael can unlock a hidden murder investigation.

Steps to unlock:

  • Visit specific hidden notes and clues around Los Santos.

  • Solve the puzzle to reveal the killer’s identity.

  • Reward: Unlocks a film noir filter for Story Mode.


10. 🕵️‍♂️ Bigfoot & Peyote Plants

Bigfoot (Sasquatch) has been part of GTA myths since San Andreas—and GTA V continues it.

How to unlock Bigfoot encounter:

  • Collect special peyote plants after 100% completion.

  • During one quest, you can briefly play as Bigfoot.

💡 Extra: There’s also a secret mission called “The Last One” (Franklin only) where you hunt down Bigfoot.


🏆 Conclusion

GTA V Story Mode is more than just its main missions—it’s a playground of mysteries, Easter eggs, and secrets. From frozen aliens to haunted cliffs and hidden serial killers, Rockstar created a world packed with surprises for curious players.

Unlocking these secrets requires exploration, patience, and often 100% game completion—but the payoff is discovering content that many casual players miss.


🔎 FAQs (SEO Section)

Q1: What is the biggest secret in GTA V Story Mode?
👉 The Mount Chiliad UFO mystery is considered the biggest hidden secret.

Q2: Can you find aliens in GTA V Story Mode?
👉 Yes. A frozen alien appears in the Prologue, and UFOs spawn after 100% completion.

Q3: How do you unlock the Space Docker in GTA V?
👉 Collect all 50 spaceship parts as Franklin, then meet Omega to unlock it.

Q4: Is the Ghost of Mount Gordo real in GTA V?
👉 Yes. She appears between 11 PM – 12 AM in-game time near the cliffs.

Q5: What is the Infinity Killer mystery in GTA V?
👉 A hidden serial killer subplot involving Merle Abrahams, revealed through notes and graffiti across Blaine County.