<P> In May 2018, it was announced that Charles Melton and Vanessa Morgan, who play Reggie Mantle and Toni Topaz, respectively, would both be promoted to series regulars in the third season . </P> <P> Filming of the pilot began on March 14, 2016, and ended on April 1 in Vancouver, British Columbia . Production on the remaining 12 episodes of season one began on September 7, 2016, in Vancouver . Sets include Pop Tate's Chock'lit Shoppe, a copy of the functioning diner used in the pilot that is so realistic a truck driver parked his 18 - wheeler there, believing that it was open . Season two was also filmed in Vancouver and the nearby Fraser Valley . The aerial view of Riverdale is actually drawn from stock footage used in the series Pretty Little Liars, Gilmore Girls, and the landmark setting are the same utilized in both of the aforementioned series as well as in Hart of Dixie . Filming for the second season started on June 22, 2017, and concluded on March 27, 2018 . Filming for the third season started on July 6, 2018 . </P> <P> Several reviewers had noted that the series' episode titles are often taken directly or slightly altered from the titles of older films . For example, De Elizabeth of TeenVogue points out that Riverdale's pilot episode was named "River's Edge" after the 1986 film of the same name, and the season finale also takes its name from 1997's The Sweet Hereafter . Executive producer Roberto Aguirre - Sacasa notes that this is a deliberate choice, in order to hint at what will happen in that episode . References to the fictional setting of the Black Mirror episode "San Junipero" can be seen in viewed in season one as well as heard amongst dialogue in season two . </P> <P> Additionally, Katie - Kouise Smith, of Popbuzz, notes that the opening credits for Riverdale mirror those of the Twin Peaks television series, and are intended as an homage to that series' co-creator, David Lynch . </P>

What are all riverdale episode titles based on