Lili Reinhart & Cooper Raiff's Sibling Codependency in "Hal & Harper" | IMDb

Writer/director/editor/executive producer #CooperRaiff (Cha Cha Real Smooth) wears many hats on his poignant family dramedy “Hal & Harper.” He also plays the titular Hal opposite “Riverdale’s” #LiliReinhart as Harper, the sibling stars of the 8-episode series that features Mark Ruffalo as their hard-luck dad. At The IMDb Studio in the Acura House of Energy during the 2025 Sundance Film Festival, Raiff, Reinhart, and cast members Alyah Channelle Scott, Addison Timlin, #HavanaRoseLiu, and Christopher Meyer discuss their on-set experiences and how they felt about getting acting notes from a scene partner.

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00:00 -- Intro
00:14 -- Was Director Cooper Raiff Giving Notes?
00:16 -- What Is "Hal & Harper" All About?
00:41 -- How Lili Reinhart Connects to Harper
01:06 -- Lili and Cooper on Crafting a Closeness
01:47 -- Why Raiff Sees His Costars as Directors
02:35 -- Lili Reinhart Recounts Being Directed by Mädchen Amick on "Riverdale"
03:07 -- Why Havana Rose Liu Was Initially "Wary" About the Role
03:52 -- Christopher Meyer Trusted "Coop" to Lead the Way