The Alternateville Horror (S04E08)

The Sliders land in world that seems idyllic – until black clouds form and people scramble for cover. The Sliders soon learn why: the rain is acid rain. They take shelter in the Chandler Hotel, but are alarmed to see guests rushing out to brave the rain, rather than spend a night there. The overly-friendly clerk, Kelly, gladly checks the Sliders into the Presidential suite at a discount price; the hotel has a hard time keeping rooms booked. As the Sliders settle in Colin elects to stay in the room as the others convene in the bar for a drink. There, Kelly turns up again, this time as their barmaid. Meanwhile, up in the room Colin watches TV, and is startled to see a little boy appear in the room. The boy speaks, but there is no sound, and Colin follows him down the hall, only to see the boy walk through a closed door into room 315. Later that night, as Rembrandt shaves, a message appears in the steamy mirror: "Help us." At the same time, Maggie sees a stranger using some device near their doorway, but continues on to the ice machine. When she opens it, she sees her head, buried in the ice. (iTunes)