In 'Nightcall: Whose There?', players assume the role of an eccentric, reclusive detective living in a quirky old mansion that's said to be haunted. One fateful night, amidst a severe thunderstorm, the detective receives cryptic phone calls from mysterious characters who claim they are in danger and need help. As players navigate through the ghostly corridors of the mansion, they must unravel the backstories of the callers, investigating their eerie tales while balancing the detective's sanity. Each decision they make impacts the outcome, leading to multiple dramatic endings. Uncover secrets about the mansion, its previous inhabitants, and whether the real threat lies within the house itself or outside in the tempest.