“Sorry,” she said to the dad, “you go ahead,” and she smiled before she realized that he was not even looking at her but instead, uncertainly, down the steps themselves. She had a vestigial memory of pissing off rude strangers while pushing April around in one of those strollers, and also a mother’s instinctive assumption that men are overmatched by small children. “Guys, go on downstairs,” she said to April and Jonas. “Not through the turnstile.” She turned back to the father with her most prim smile as other commuters swirled into the open lane created by the kids’ departure and said, “Can I give you a hand carrying the pasha here?” Suddenly his eyes seemed to focus on her, and he gave her a very winning smile, though without nodding or shrugging or otherwise acknowledging that she’d spoken. He did not even seem to notice the swarm of hostile strangers struggling to get past him, which was an admirable quality, Cynthia thought. Or maybe there was something wrong with him.

“Yes, thanks,” he said at last. “That’s really nice of you.”

He didn’t move and so she went around to the front of the stroller and picked up the strap between the front wheels, even though that meant she would be the one backing down the stairs. He lifted his end by the handles and they started down slowly.

“So you’ve obviously been in my position before,” he said. “Beautiful kids.”

She smiled, looking down at her feet for the next step. In front of her, the little boy’s eyes opened slightly.

“Easy to see where they get it from,” the father said.

“Thanks. Well, you too. He’s a knockout.”

“So, I guess this is like the meet-cute,” he said, and she laughed, even if she didn’t quite know what he meant. People flowed all around them. She tried to find April and Jonas but couldn’t turn her head far enough to see them. “My name’s Eric, by the way,” he said.

“Cynthia.”

“Hey Cynthia?” he said. He bent from the waist, and so she knew she was almost at the bottom step. She had to lean forward suddenly just to hear him. “This was so nice of you. Look, this is going to sound bizarre, but do you live in this neighborhood? I would hate to think that I’ll never see you again. You are a really beautiful woman.”

“I’m sorry?” Cynthia said.

“I can’t believe I said that,” Eric said, and it seemed exactly like he was telling the truth. He was probably an unemployed actor. His wife was probably some corporate lawyer who felt guilty for not spending more time with her son, while her husband spent his afternoons in the playground collecting phone numbers from au pairs.

They were now both standing on the cement floor inside the station, still holding the stroller between them, a couple of feet off the ground. People hustling down the stairs brushed past them as if they weren’t even there. She knew that the longer she just stood there, the more emboldened he would become. She could feel herself turning red.

“Do you do this a lot, Eric?” she said.

He knew how to stare into a woman’s eyes, that was for sure. “I know I’m being insanely forward,” he said, “but I’m not sorry, because two more seconds and I was never going to see you again. I know you’re married. I’m married too. It doesn’t have to be about that.”

What? she kept saying to herself, as if she were deaf to whatever she was thinking. What? His son’s eyes were half open and on her, as expressionless as if he had just sentenced her to death. It made Eric himself seem like some sort of superman to know that on some level he’d forgotten that the boy was even there.

She put her end of the stroller gently on the floor and turned and walked away as fast as she could. Jonas and April were standing by the nearest turnstile with that look of infinite sarcastic indulgence kids always wore when they had to wait for you. Cynthia panicked for a moment, thinking that they would surely ask her what all that was about and knowing she was still too rattled to make up an answer; but they didn’t say a word, they couldn’t have cared less. They turned and ran their MetroCards through the slot and walked ahead of her down the steps to the express track.

Cynthia was neither offended nor flattered, really-mostly she just thought it was hilarious. She couldn’t wait to tell Adam about it. It did bother her a little bit to think that this kind of unsanctioned activity went on without her, that she was not a part of it, even though she had no desire to be part of it-married strangers hooking up in earshot of their kids. Who knew? Maybe this sort of decadence went on all the time. There was a time when she might have at least led the guy on a little bit just to shock herself, when anything that new to her would have presented itself in the form of a hypothetical dare.

“Earth to Mom,” Jonas said. A train was already there at the express platform, its doors just sliding open, and the kids had quickened their steps to catch it. She ushered them along in front of her, where she could see them; when the doors opened, they stepped inside, and then a voice from on board the train roared, “Hold the door!” She heard a ticking sound; it was the cane of a blind man, white-haired, wearing an old blue blazer, a baseball cap, and enormous wraparound sunglasses. He seemed angry about something, or at someone. “Hold the door!” he yelled again, though someone, not Cynthia, was already holding it. His cane swung incautiously at about ankle level, swatting the base of the seats, the pole at the center of the car, the door frame, and people’s legs. She couldn’t tell whether he was actually orienting himself this way or just panicking. She took another step back, to avoid the cane’s arc-not because she feared it would hurt, but because she didn’t want to send the man any kind of false information-and then it happened: the doors closed with their two-note chime, and she was on the platform and they were on the train, and as it pulled out she saw the look of terror on Jonas’s face, though he might well have been terrified mostly of her, banging her hands on the glass and screaming Wait.

Even before she’d reached the end of the platform the train was moving too fast for her, and there she was, watching the train lights shrinking away from her down the tunnel. She couldn’t turn away from it. She could feel that the strangers behind her had stopped moving too: nothing was moving anymore but that train. “You got kids on that train?” a voice said behind her, a young voice, a man’s voice. Misfortune made everyone familiar with you. “How old are they?”

Cynthia turned around and tried to answer but could not. She could actually see a black circle forming at the edges of her own vision.

“Go to the booth and ask for a transit cop,” the young man said-he was wearing a huge Knicks jersey. “You go,” someone else said to him contemptuously. “You’re going to send this woman up the stairs? You can’t see she’s about to pass out as it is?” Over their heads she heard a gathering roar, and she thought at first she was fainting but it was a real roar, there was another express train pulling in beside them. Two people were holding her gently by the elbows. The children had disappeared into a tunnel: it didn’t seem real. “What’s your name?” an older woman’s voice said.

Cynthia got on the first car of the train and groped her way to the locked front door that faced forward into the darkness. She understood it was a stupid idea but the logic of the situation was all dream logic now and she didn’t feel there was anything to discuss. The children’s fear filled every cell of her. She had to go find them. She had to put her face flat against the glass in order to see past her own reflection, even though there was nothing to see for a long time but the track and the steelwork that held open the tunnel and the ghostly local stations they sped through without stopping. Finally she felt the train slowing down beneath her feet and the lights of the platform at 59th Street floated toward her. She burst out onto the platform and only then did it occur to her that there was no real reason to think that the kids had gotten off here at all, maybe they were still crying on the train as it continued on its long loop beneath the city, but then she saw a cop farther down the platform and the cop had his hands on two children’s shoulders and the two children were April and Jonas.