Uyên’s new job had transformed her, and Vấn was surprised to find that she no longer displayed any signs of annoyance or weariness when being intimate with him. She seemed to be in a constant state of arousal. She appeared far more responsive to him than before, and she treated him with greater patience. At times, Vấn imagined he might actually be able to fully satisfy Uyên—at least on occasion—though he wasn't entirely sure. Uyên’s transformation delighted him at first, but as time went on, Vấn began to grow suspicious and found himself raising many questions.

Uyên’s peculiarities, though subtle, were impossible for Vấn to overlook. Certain positions or techniques she employed were entirely novel to him. Her gestures and actions seemed to have been imported from some outside source—caresses and acts of affection accompanied by strange, unfamiliar forms of stimulation. Even her laughter and the sounds she made while in his arms had undergone a change. Vấn had a distinct intuition that her newfound uninhibitedness during intimacy must have a root cause. And so he concluded—or rather, he *knew*—that Uyên was having an affair; that there was another man in her life.

No sensation is more agonizing for a man than the feeling of being cuckolded. A friend of Vấn’s had once told him exactly that while recounting the story of his own marriage’s collapse. Vấn had merely offered a smile of pity back then, never imagining that such a thing could ever happen to him. Accidents, misfortunes, and horrors of all kinds always seem like things that happen to *other* people—never to oneself—until the moment they actually strike. Vấn was perceptive enough to realize that Uyên was being unfaithful—that he had indeed been cuckolded—yet he could not bring himself to accept it fully; a part of him still clung to the hope that it wasn't true, desperately attempting to delude himself.

Perhaps he was simply being overly suspicious and jealous, seeing as Uyên had begun leaving early in the morning and returning late at night? Could Uyên’s changes be merely a matter of social obligation—that she still loved him, and everything remained just as it was? Vấn had sat for hours, trying to convince himself, searching for every possible excuse to vindicate Uyên. Yet, from the deepest recesses of Vấn’s soul—that place where his calculating, strictly rational nature held sway—he weighed the conflicting facts and conclusions. Vấn could do nothing other than accept the truth: he had, indeed, been cuckolded!

The only remaining issue was concrete proof—for Vấn, a man of exemplary propriety and meticulous method in all his dealings, felt compelled to see it with his own eyes, to witness it clearly so that not a shred of doubt could possibly linger. Vấn had hired a private investigator to tail Uyên for several consecutive days, and he awaited the man’s report like a condemned prisoner awaiting a death sentence. One afternoon, amidst a torrential downpour, he was at work when his secretary informed him that a Frank Rutter was insisting on speaking with him immediately. It was a matter of the utmost urgency—a private affair!

Vấn picked up the receiver. His heart pounded as if he had just run a grueling cross-country mile. His spirits sank instantly. Rutter spoke in a flat, detached tone—the voice of a man who performed this task every day, sounding utterly bored, as if this were nothing more than a mundane way to earn a living:

"I’m parked right outside the Holiday Inn. Your wife just went inside with another man. I followed them and saw them rent a room. Would you like to come over right now?"

Vấn asked in return, his voice cracking and barely audible, as if he had been winded:

"Are you absolutely sure? Is it definitely my wife?"

Rutter replied curtly:

"I cross-referenced her with the photo you gave me. There’s no mistake!"

"I’m on my way!"
 
He dropped the receiver and, as if fleeing from a ghost, bolted from his office, calling out over his shoulder as he rushed past his secretary’s desk in the outer room:

"I have to leave early!" Family matters!

The secretary watched in astonishment; for nearly eight years, Van had never left the office even half a minute early!

Van drove to the Holiday Inn, where he found Rutter waiting for him right at the entrance. Rutter said:

"They’ve rented Room 305. What do you want to do?"

Van had regained his composure during the drive from the bank to the hotel. He asked Frank Rutter in return:
 
"What do you think I should do?"

Rutter shrugged:

"That depends entirely on what you want. Do you simply want to know for certain, or do you want concrete evidence—photographic proof? The matter rests entirely on your decision!"

Van nodded and said to Rutter:

"I just want to know for certain. That’s all. However, I do want you to take a few photos when they leave the premises—close-ups, as well as shots that clearly show the Holiday Inn signage in the background."

Van sat inside Rutter’s car—parked on the opposite side of the street, directly across from the hotel’s main entrance—waiting for Uyen and for a glimpse of the man who had cuckolded him. In the back seat, Rutter had his camera—equipped with a state-of-the-art telephoto lens—ready to shoot. Van tried to clear his mind, yet the image of Uyen inside that hotel room, making love to a man who was not him, flashed vividly before his eyes.
 
Suddenly, Van felt a wave of nausea; he felt as though he were about to vomit. He could even perceive the pathetic nature of his own presence there—sitting with a private investigator poised to take photographs, waiting for Uyen and her lover to emerge from their hotel bedroom. Why didn't he simply fly into a rage—roaring like any other ordinary man—and storm in to catch the adulterous pair red-handed, letting the chips fall where they may? He even found himself wondering: why hadn't he simply done the tailing himself and then shot them both? Questions arose, and various courses of action were hypothesized...