I went looking for someone else’s secret. Instead, I discovered one inside my own marriage.

PART 1

“If that woman is cheating on my son, I will kick her out of her own house today,” Margaret muttered quietly as she inserted a key into the lock that nobody knew she had.

It was a little after four in the afternoon in a modern building in the Northwood district of Minneapolis. The hallway was completely empty, and Margaret had chosen this specific time because she knew her son, Samuel, was still working at his engineering firm until after seven while her daughter-in-law, Chloe, usually taught yoga and pilates classes every afternoon.

Margaret had been sneaking into the apartment for months without telling anyone.

She did not consider herself a meddlesome mother-in-law, believing instead that she was simply a devoted mother looking after her son. She routinely checked if there was food in the refrigerator, if Samuel’s shirts were properly ironed, if the bathroom was clean, and even if Chloe bought overpriced groceries. She had secret duplicate keys made without telling a soul, convinced that having them would prove necessary someday.

And that day, in her mind, had finally arrived.

The previous afternoon, she had spotted Chloe leaving a shopping center, laughing happily beside a well-dressed man who was driving a sleek silver SUV. The man had opened the passenger door for her, and Chloe had stepped inside without any hesitation.

Margaret had hardly slept a wink all night.

For her, the explanation was glaringly obvious, leading her to believe that Chloe was having an affair.

“My poor son is breaking his back at work while she is out walking around with another man,” she repeated to herself, fueling her growing anger.

She entered the apartment expecting to find immediate proof of infidelity, but the kitchen was completely spotless. There were no dirty glasses, unused plates, gift bags, or anything else out of the ordinary anywhere in sight. Far from reassuring her, this spotless environment only served to make her even more suspicious.

“She cleaned everything up before going out to meet him,” she thought bitterly.

Then she heard light laughter coming from behind the closed master bedroom door.

First, she heard a young, flirtatious female voice ring out.

A moment later, a distinct male voice answered back.

Margaret remained completely motionless in the hallway.

She felt her heart pounding against her chest so hard that she had to lean against the wall for support.

Then she heard the unmistakable pop of a champagne bottle being opened inside.