Viewers were left stunned in 1986 when Bobby Ewing came back from the dead after he passed away following a car crash the previous season.
The infamous plot peaked when the character, played by Patrick Duffy, was found by his grieving widow Pamela enjoying a morning shower, and his death - and the entire season - was explained away as a dream.
The audacious move sparked anger and awe in equal measure among fans of the show - and producers of the upcoming relaunch have boldly referenced the programme's most famous moment in a new ad.
The poster shows Duffy and his original co-stars Larry Hagman and Linda Gray in a shower alongside newcomers Jesse Metcalfe, Josh Henderson, Jordana Brewster, Julie Gonzalo and Brenda Strong - with the slogan, "They're back. And no, you're not dreaming."