Part 4/7:
As the heat intensifies, attempts to escape become desperate. With the sauna's temperature rising dangerously, Ian tries to break through the glass window for ventilation, injuring himself in the process. Meanwhile, Jenna fears for their safety while also confronting the reality of her past trauma.
In a moment of chaos, an attempt to blow a fuse goes wrong, resulting in Ian being electrocuted and the light in the sauna going out.