It turned out that Henrich had left a note. Mathias showed it to Amy and Jeff early one morning, during the second week of their vacation. It was handwritten, in German, with a shakily drawn map at the bottom. They couldn't read the note, of course; Mathias had to translate it for them. There wasn't anything about drugs or the police-that was just Eric being Eric, jumping to conclusions, the more dramatic the better. Henrich had met a girl on the beach. She'd flown in that morning, was on her way to the interior, where she'd been hired to work on an archaeological dig. It was at an old mining camp, maybe a silver mine, maybe emeralds-Mathias wasn't certain. Henrich and the girl had spent the day together. He'd bought her lunch and they'd gone swimming. Then he took her back to his room, where they showered and had sex. Afterward, she left on a bus. In the restaurant, over lunch, she'd drawn a map for him on a napkin, showing him where the dig was. She told him he should come, too, that they'd be glad for his help. Once she left, Henrich couldn't stop talking about her. He didn't eat dinner and he couldn't fall asleep. In the middle of the night, he sat up in bed and announced to Mathias that he was going to join the dig.

Mathias called him a fool. He'd only just met this girl, they were in the midst of their vacation, and he didn't know the first thing about archaeology. Henrich assured him that it was really none of his business. He wasn't asking for Mathias's permission; he was merely informing him of his decision. He climbed out of bed and started to pack. They called each other names, and Henrich threw an electric razor at Mathias, hitting him on the shoulder. Mathias rushed him, knocking him over. They rolled around on the hotel room floor, grappling, grunting obscenities, until Mathias accidentally head-butted Henrich in the mouth, cutting his lip. Henrich made much of this, rushing to the bathroom so that he could spit blood into the sink. Mathias pulled on some clothes and went out to get him ice, but then ended up going downstairs to the all-night bar by the pool. It was three in the morning. Mathias felt he needed to calm down. He drank two beers, one quickly, the other slowly. When he got back to their room, the note was sitting on his pillow. And Henrich was gone.

The note was three-quarters of a page long, though it seemed shorter when Mathias read it out loud in English. It occurred to Amy that Mathias might be skipping some of the passages, preferring to keep them private, but it didn't matter-she and Jeff got the gist of it. Henrich said that Mathias often seemed to mistake being a brother with being a parent. He forgave him for this, yet he still couldn't accept it. Mathias might call him a fool, but he believed it was possible he'd met the love of his life that morning, and he'd never be able to forgive himself-or Mathias, for that matter-if he let this opportunity slip past without pursuing it. He'd try to be back by their departure date, though he couldn't guarantee this. He hoped Mathias would manage to have fun on his own while he was gone. If Mathias grew lonely, he could always come and join them at the dig; it was only a half day's drive to the west. The map at the bottom of the note-a hand-drawn copy of the one the girl had sketched on the napkin for Henrich-showed him how to get there.

As Amy listened to Mathias tell his story and then struggle to translate his brother's note, she gradually began to realize that he was asking for their advice. They were sitting on the veranda of their hotel. A breakfast buffet was offered here every morning: eggs and pancakes and French toast, juice and coffee and tea, an immense pile of fresh fruit. A short flight of stairs led to the beach. Seagulls hovered overhead, begging for scraps of food, shitting on the umbrellas above the tables. Amy could hear the steady sighing of the surf, could see the occasional jogger shuffling past, an elderly couple searching for shells, a trio of hotel employees raking the sand. It was very early, just after seven. Mathias had awakened them, calling from the house phone downstairs. Stacy and Eric were still asleep.

Jeff leaned forward to study the map. It was clear to Amy, without anything explicit having been said, that it was his advice Mathias was soliciting. Amy didn't take offense; she was used to this sort of thing. Jeff had something about him that made people trust him, an air of competence and self-confidence. Amy sat back in her seat and watched him smooth the wrinkles from the map with the palm of his hand. Jeff had curly, dark hair, and eyes that changed color with the light. They could be hazel or green or the palest of brown. He wasn't as tall as Mathias, or as broad in the shoulders, but despite this, he somehow seemed to be the larger of the two. He had a gravity to him: he was calm, always calm. Someday, if all went according to plan, Amy imagined that this would be what would make him a good doctor. Or, at the very least, what would make people think of him as a good doctor.

Mathias's leg was jiggling, his knee jumping up and down. It was Wednesday morning. He and his brother were scheduled to fly home on Friday afternoon. "I go," he said. "I get him. I take him home. Right?"

Jeff glanced up from the map. "You'd be back this evening?" he asked.

Mathias shrugged, waved at the note. He only knew what his brother had written.

Amy recognized some of the towns on the map-Tizimín, Valladolid, Cobá-names she'd seen in their guidebook. She hadn't really read the book; she'd only looked at the pictures. She remembered a ruined hacienda on the Tizimín page, a street lined with whitewashed buildings for Valladolid, a gigantic stone face buried in vines for Cobá. Mathias's map had anX drawn somewhere vaguely west of Cobá. This was where the dig was. You rode a bus from Cancún to Cobá, where you hired a taxi, which took you eleven miles farther west. Then there was a path leading away from the road, two miles long, that you had to hike. If you came to the Mayan village, you'd gone too far.

Watching Jeff examine the map, she could guess what he was thinking. It had nothing to do with Mathias or his brother. He was thinking of the jungle, of the ruins there, and what it might be like to explore them. They'd talked vaguely of doing this when they'd first arrived: how they could hire a car, a local guide, and see whatever there was to be seen. But it was so hot; the idea of trudging through the jungle to take pictures of giant flowers or lizards or crumbling stone walls seemed less and less attractive the more they discussed it. So they stayed on the beach. But now? The morning was deceptively cool, with a breeze coming in off the water; she knew that it must be hard for Jeff to remember how humid the day would ultimately become. Yes, it was easy enough for her to guess what he was thinking: why shouldn't it be fun? They were slipping into a torpor, with all the sun and the food and the drinking. A little adventure like this might be just the thing to wake them up.

Jeff slid the map back across the table to Mathias. "We'll go with you," he said.

Amy didn't speak. She sat there, reclining in her chair. Inside, she was thinking, No, I don't want to go, but she knew she couldn't say this. She complained too much; everyone said so. She was a gloomy person. She didn't have the gift of happiness; somewhere along the way, someone had neglected to give it to her, and now she made everyone else suffer for her lack of it. The jungle would be hot and dirty, its shadowed spaces aswarm with mosquitoes, but she tried not to think of this; she tried to rise above it. Mathias was their friend, wasn't he? He'd loaned them his scuba tank, showed them where to dive. And now he was in need. Amy let this thought gather strength in her mind, a hand pulling shut doors, slamming them in rapid succession, until only one was left open. When Mathias turned toward her, grinning, pleased with Jeff's words, looking for her to echo them, she couldn't help herself: she smiled back at him, nodded.