Warner Bros. had the idea that what worked for 77 Sunset Strip would turn into a sort of cottage industry for the studio. Ah, but not so fast.
Surfside 6 was, to an extent, a spin-off from Bourbon Street Beat, largely with one character, Ken Madison (Van Williams) relocating from New Orleans to Miami. Lee Patterson, Troy Donohue, & Diane McBain co-starred. The series lasted just 2 seasons (1960-2), and perhaps that might be because the setting was too close to another WB crime drama, Hawaiian Eye.
I never saw the show, but the following video is being posted in memory of Van Williams, later of The Green Hornet, who passed away at 82.