Ann confronts the shock that her husband Tim has been unfaithful after receiving a mysterious lingerie package not from him but from another woman claiming to share Tim. Tim insists his innocence, claiming someone is trying to frame him and invites Ann to verify his alibi at the Rex Hotel. Despite his reassurances, Ann's suspicion grows, motivating her to investigate further. Meanwhile, another person taunts Tim about the affair, heightening tension. The episode ends with Ann poised to uncover the truth as she arrives at the hotel, facing the possibility of confronting Tim's alleged betrayal directly.