SLIFF’s opening night features the world premiere of “Bad Grandmas,” a St. Louis-shot comedy by co-writer/director Srikant Chellappa and co-writer Jack Snyder, the team behind such polished productions as “Ghost Image” and “Fatal Call,” which were based locally but screened both nationally and internationally. Starring the late Florence Henderson (“The Brady Bunch”) in her final role and the legendary Pam Grier (“Jackie Brown”), “Bad Grandmas” recounts the misadventures of senior citizens Mimi (Henderson), Coralee (Grier), Bobbi (Susie Wall), and Virginia (Sally Eaton). The friends' quiet life is upended when Bobbi’s son-in-law, Jim (David Wassilak), cons her and she loses her house. Mimi, the unofficial leader of the group, decides to take matters into her own hands, but things spin out of control, and Jim is inadvertently killed. It isn’t long before local detective Randy McLemore (Randall Batinkoff) begins to investigate. Adding further complication — and danger — is Jim’s criminal associate Harry Lovelace (Judge Reinhold of “Beverly Hills Cop”), who’s on the hunt to collect the money his partner owes him. The situation appears grim, but these bad grandmas are no ordinary women.