Maggie had hated it all. Chicago, Walter, the big house, the private school, the blistering cold and concrete landscape. She hated the sound of traffic and emergency vehicles. One thing she could recall in retrospect, it brought her mother to life. Phoebe was almost entirely happy, the only smudge on her brightness being her ornery daughter. They had switched roles.

 By the time Maggie was eleven she was visiting her dad regularly—first a few weekends, then whole months and some holidays. She lived for it and Phoebe constantly held it over her. Behave yourself and get good grades and you’ll get to spend the summer at that god-awful camp, eating worms, getting filthy and risking your life among bears.

 “Why didn’t you fight for me?” she had continually asked her father.

 “Aw, honey, Phoebe was right, I wasn’t worth a damn as a father and I just wanted what was best for you. It wasn’t always easy, neither,” he’d explained.

 Sometime in junior high Maggie had made her peace with Walter, but she chose to go to college in Denver, near Sully. Phoebe’s desire was that she go to a fancy Ivy League college. Med school and residency were a different story—it was tough getting accepted at all and you went to the best career school and residency program that would have you. She ended up in Los Angeles. Then she did a fellowship with Walter, even though she hated going back to Chicago. But Walter was simply one of the best. After that she joined a practice in Denver, close to her dad and the environment she loved. A year later, with Walter finally retired from his practice and enjoying more golf, Phoebe and Walter moved to Golden, Colorado, closer to Maggie. Walter was also seventy, like Sully. Phoebe was a vibrant, social fifty-nine.

 Maggie thought she was possibly closer to Walter than to Phoebe, especially as they were both neurosurgeons. She was grateful. After all, he’d sent her to good private schools even when she did every terrible thing she could to show him how unappreciated his efforts were. She had been a completely ungrateful brat about it. But Walter turned out to be a kind, classy guy. He had helped a great many people who proved to be eternally grateful and Maggie had been impressed by his achievements. Plus, he mentored her in medicine. Loving medicine surprised her as much as anyone. Sully had said, “I think it’s a great idea. If I was as smart as you and some old coot like Walter was willing to pick up the tab, I’d do it in a New York minute.”

 Maggie found she loved science but med school was the hardest thing she’d ever taken on, and most days she wasn’t sure she could make it through another week. She could’ve just quit, done a course correction or flunked out, but no—she got perfect grades along with anxiety attacks. But the second they put a scalpel in her hand, she’d found her calling.

 She sat on Sully’s couch, drank two beers, then lay down and pulled the throw over her. Beau pushed in through his doggy door and lay down beside the couch. The window was open, letting in the crisp, clean March air, and she dropped off to sleep immediately to the rhythmic sound of Sully raking out a trench behind the house. She started fantasizing about summer at the lake but before she woke she was dreaming of trying to operate in a crowded emergency room where everyone was yelling, bloody rags littered the floor, people hated each other, threw instruments at one another and patients were dying one after another. She woke up panting, her heart hammering. The sun had set and a kitchen light had been turned on, which meant Sully had been to the house to check on her.

 There was a sandwich covered in plastic wrap on a plate. A note sat beside it. It was written by Enid, Frank’s wife. Enid worked mornings in the store, baking and preparing packaged meals from salads to sandwiches for campers and tourists. Welcome Home, the note said.

 Maggie ate the sandwich, drank a third beer and went to bed in the room that was hers at her father’s house.

 She woke to the sound of Sully moving around and saw that it was not quite 5:00 a.m. so she decided to go back to sleep until she didn’t have anxiety dreams anymore. She got up at noon, grazed through the refrigerator’s bleak contents and went back to sleep. At about two in the afternoon the door to her room opened noisily and Sully said, “All right. Enough is enough.”

 * * *

 Sully’s store had been built in 1906 by Maggie’s great-grandfather Nathaniel Greely Sullivan. Nathaniel had a son and a daughter, married off the daughter and gave the son, Horace, the store. Horace had one son, Harry, who really had better things to do than run a country store. He wanted to see the world and have adventures so he joined the Army and went to Vietnam, among other places, but by the age of thirty-three, he finally married and brought his pretty young wife, Phoebe, home to Sullivan’s Crossing. They immediately had one child, Maggie, and settled in for the long haul. All of the store owners had been called Sully but Maggie was always called Maggie.

 The store had once been the only place to get bread, milk, thread or nails within twenty miles, but things had changed mightily by the time Maggie’s father had taken it on. It had become a recreational facility—four one-room cabins, dry campsites, a few RV hookups, a dock on the lake, a boat launch, public bathrooms with showers, coin-operated laundry facilities, picnic tables and grills. Sully had installed a few extra electrical outlets on the porch so people in tents could charge their electronics and now Sully himself had satellite TV and Wi-Fi. Sullivan’s Crossing sat in a valley south of Leadville at the base of some stunning mountains and just off the Continental Divide Trail. The camping was cheap and well managed, the grounds were clean, the store large and well stocked. They had a post office; Sully was the postmaster. And now it was the closest place to get supplies, beer and ice for locals and tourists alike.

 The people who ventured there ranged from hikers to bikers to cross-country skiers, boating enthusiasts, rock climbers, fishermen, nature lovers and weekend campers. Plenty of hikers went out on the trails for a day, a few days, a week or even longer. Hikers who were taking on the CDT or the Colorado Trail often planned on Sully’s as a stopping point to resupply, rest and get cleaned up. Those hearties were called the thru-hikers, as the Continental Divide Trail was 3,100 miles long while the Colorado Trail was almost 500, but the two trails converged for about 200 miles just west of Sully’s. Thus Sully’s was often referred to as the crossing.