When I 'Died', My Husband Regretted Cheating on Me

Allison monitors her husband Brian's lab as an undercover supervisor, issuing instructions through the team group chat. She also sees every intimate encounter between him and Sarah, the graduate student who joined his team and lost control of herself during an experiment, pulling him into a reckless act that spiralled into an ongoing affair.

When Brian leaves her bed to rush to Sarah, Allison watches the surveillance footage, clenching her fists as tears stream. He returns, wraps his arms around her and suggests they try for a baby, while she knows Sarah is likely already pregnant. She says nothing, holding on to the gift she has prepared for his birthday.

As the advisor who refused the position until she learned Brian had joined Group A, Allison has witnessed his betrayal firsthand, and signs of depression have crept in. She has three days left before she infiltrates the experiment to identify who is placing toxic substances in the lab, and then she is done with this mission.