Nerissa has returned to Tobago to reopen her aunt’s guesthouse. The repairs are manageable. The instructions are less clear: pay the sixth room’s charge, keep it marked occupied, and never give anybody the key—even if they have paid.

After an inventory error, Nina Grant arrives with a confirmed booking for Room Six. Nerissa offers a replacement, but the house has already begun arranging its own welcome. A sea-facing window appears on an interior wall. A disconnected telephone rings. A guest review predicts tomorrow’s accident and praises the owner for being reassuring afterward.

As attempts to prevent the reviews become part of the events they describe, a neighbour identifies a woman who supposedly checked out decades earlier. Nerissa’s inheritance includes more than a property: it includes a version of that departure which somebody has kept charging the room to preserve.

Tomorrow’s Guests is an eight-episode first season with a complete central resolution, following a living guest’s effort to leave and an owner’s confrontation with the account her house refuses to let stand.