TV Hal & Harper Hal & Harper 7.3/10 by 13 users Hal and Harper, two codependent siblings living in Los Angeles, try to preserve their childhood even though their single father forces them to grow up too fast. Details Casts Posters Images Title Hal & Harper Alternative Titles Hal and Harper First Air Date 2025-10-19 Last Air Date 2025-11-30 Number of Episodes 8 Number of Seasons 1 Genres Comedy, Drama, Networks MUBI, Casts Cooper Raiff, Lili Reinhart, Betty Gilpin, Mark Ruffalo Plot Keywords , Hal Cooper Raiff Harper Lili Reinhart Kate Betty Gilpin Dad Mark Ruffalo