Fuller's second longest-running friendship was that of Julie London, a young, new popular singer and an accomplished movie actress, whom he met (alongside her future husband Bobby Troup, 15 years Fuller's senior), when he was stopping in for a beer at one of the clubs in Los Angeles, California, in 1955. Being 7 years his senior, the young, unfamiliar, struggling actor even witnessed her own singing. Then, five years later, London would guest-star with Fuller on the first episode of the second season of "Laramie," "Queen of Diamonds." London acted the part of the sheriff's wife (played by Claude Akins). That episode was the beginning of a wonderful relationship, while at approximately the same time, he continued keeping in touch with Troup. In late 1971, thanks to London's ex-husband (Jack Webb), he didn't have a choice other than to be reunited with both London & Troup, to star in "Emergency!" with them, where the three enjoyed a special on- and off-screen chemistry with each other, sharing a 12 lb. medical dictionary to pronounce words. When "Emergency!" was canceled, after over 130 episodes, Fuller continued to stay in touch with London. Thanks to her popularity on "Emergency!", Jack Webb wanted Julie London to become the executive producer of future projects, but she turned it down, and eventually retired from acting. Like Drury, London also called Fuller, "Bobby."