Better Call Saul takes a route no one expected with Jeff, but the end result actually works better than the popular theories. Better Call Saul season 4's «Smoke» saw a hospitalized Gene Takavic get the all-clear from doctors, but his ride home proved every bit as traumatic as the ambulance journey there. Gene's cab driver eyed his passenger suspiciously throughout their trip, then hung around a little too long after a spooked Gene exited the vehicle. An Albuquerque Isotopes air freshener also confirmed the driver had some connection to the city Gene had just run away from. The creepy cabbie returned in Better Call Saul season 5, introducing himself as Jeff and forcing Gene to admit he was secretly Saul Goodman while a silent friend watched from afar...
Jeff's strange behavior and Saul Goodman obsession prompted numerous theories attempting to explain who the taxi driver really was. Undercover cop ranked among the most popular — especially with an enigmatic partner lurking around — but others believed Jeff was a criminal henchman one of Heisenberg's rivals sent to discover where Walter White kept his massive fortune. More outlandish theories even tried connecting Jeff to Kim Wexler, either as a blood relative, or an employee assigned to keep tabs on her ex-husband.
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In fact, Better Call Saul's Jeff is none of those things. He's a cab driver who once lived in Albuquerque, exactly as claimed. Jeff lives with his delightful mother, Marion, and his intimidatingly quiet friend really is just some quiet guy he hangs around with. Jeff recognized Saul Goodman during their cab ride in Better Call Saul season 4, but only by pure, dumb coincidence, not because he was sent by the FBI,
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