Aug. 11 (UPI) -- Will Forte inhabits a haunted hotel run by his estranged sister in Haunted Hotel , an animated comedy arriving on the streamer Sept. 19. Katherine (Eliza Coupe) is a single mother helming the ghostly inn Undervale. "Luckily, she has some help from her estranged brother... who is now one of the ghosts and thinks his fellow phantoms have some pretty good ideas," an official synopsis reads . A preview released Monday shows Katherine's son (Skyler Gisondo) on the phone while his