Then he saw him. The man in the loden coat, the dapper fellow who'd been walking just behind him when he had stumbled. No, dammit, the man who had pushed him! His murderer bent over and picked up the briefcase. For a second their eyes met. The man smiled, then ran into the street, Becker couldn't see where.

Stop, he yelled silently. But he knew it was too late. He rolled his head and stared above him. The lights were so beautiful. Magnificent, really.

It was the coldest winter in memory. For the first time since 1962 the Lake of Zurich threatened a solid freeze. Already a shelf of blue ice clung to her shores. Farther out a transparent crust floated upon the surface. The stately paddle wheel steamships that called regularly on Zurich and her prosperous environs had taken refuge at their winter harbor in Kilchberg. At ports around the lake storm lamps burned red: danger, conditions hazardous.

The last snow had fallen only two days before, yet the city's roads were immaculate. Muddy piles of frozen slush that might sully the sidewalks of other urban centers had been removed. Recalcitrant patches of ice likewise. Even the rock salt and gravel spread to hasten their decomposition had been neatly swept up.

In any other year, the continuing bout of record low temperatures and unending snowfall would be reason for spirited discussion. Many a newspaper column would be devoted to a thorough tallying of the economic gains and losses to the country. To her agriculture and livestock- losers, as thousands of cows had frozen to death in low-lying barns; to her many Alpine ski resorts- all winners, and about time, after consecutive seasons of insufficient snowfall; and to her precious water table- also a winner, as experts forecast a restoration of the national aquifer after a decade of depletion. More conservative rags might even include a spiteful article pronouncing the much-feared "greenhouse effect" dead and buried.

But not this year. On this first Monday in January, no mention of the severe weather could be found anywhere on the front pages of the Neue Zurcher Zeitung, the Tages Anzeiger, or even the chronically mundane Zurcher Tagblatt. The country was struggling with something far rarer than a harsh winter: a crisis of conscience.

Signs of turmoil were not difficult to find. And Nicholas Neumann, stepping off the number thirteen tram at the Paradeplatz, immediately spotted the most prominent of them. Fifty yards ahead, along the east side of the Bahnhofstrasse, a band of men and women were gathered in front of a drab four-story building that was home to the United Swiss Bank. His destination. Most held signs, which Nick, as he preferred to be called, could read even at this distance: "Clean Up the Swiss Laundry." "Drug Money Is Blood Money." "Hitler's Bankers." Others stood with their hands shoved into their pockets, marching determinedly back and forth.

The past year had witnessed a parade of embarrassing revelations about the country's banks. Complicity in the wartime arms trade with the Third Reich; hoarding of funds belonging to survivors of Hitler's death camps; and the concealment of illicit profits deposited by the South American drug cartels. The local press had branded the banks "soulless instruments of financial chicanery" and 'willing conspirators to the drug barons' deadly trade." The public had taken note. And now those accountable must be made to pay.

Worse storms had raged and passed, mused Nick, as he set off toward the bank. He didn't share in the country's self-inculpatory mood. Nor was he sure the nation's banks were solely to blame. But that was as far as his interest went. His concern was focused elsewhere that morning: on a private matter that had haunted the darkest corners of his heart for as long as he could remember.

Nick moved easily through the crowd. He had broad shoulders and stood just over six feet tall. His step was confident and purposeful and, except for a faint limp, commanding. Veterans of the parade ground would note the curled hand laid along the rail of the trousers, the shoulders pushed back a breath more than was comfortable, and immediately recognize him as one of their own.

His face was cast from a serious mold, framed by a crop of straight black hair. His nose was prominent and spoke of a distinct, if unlanded, European heritage. His chin was sturdy rather than stubborn. But it was his eyes that caught people's attention. They were a pale blue and surrounded by a network of fine lines unexpected in someone his age. They offered a furtive challenge. His fiancee said once that they were the eyes of another man, someone older, someone wearier than a twenty-eight-year-old had any right to be. Someone she no longer knew. She'd left him the next day.

Nick quickly covered the short distance to the bank. A freezing drizzle had begun to fall, whipped up by a stiff lake breeze. Flakes of snow darkened his trench coat, but the foul weather did not intrude on his thoughts. Threading his way through the crowd of demonstrators, he kept his eyes fixed on the twin revolving doors that sat before him at the top of a broad flight of granite stairs.

The United Swiss Bank.

Forty years ago his father had begun his employ here. Apprentice at sixteen, portfolio manager at twenty-five, vice president at thirty-three, Alexander Neumann had been on the fast track to the top. Executive vice president. Board of directors. Anything was possible. And everything expected.

Nick checked his wristwatch, then climbed the stairs and entered the lobby of the bank. Somewhere close by, a church bell tolled the hour. Nine o'clock. His stomach fluttered and he recognized the uneasy frisson of a mission at hand. He smiled inwardly, giving silent greeting to the once familiar sensation, then continued across the marble floor toward a lectern marked "Reception" in letters of gold relief.

"I have an appointment with Mr. Cerruti," he said to the hall porter. "I'm to begin work today."

"Your papers?" demanded the porter, an older man resplendent in a navy topcoat with braided silver epaulets.

Nick passed across the counter an envelope bearing the bank's embossed logo.

The porter withdrew the letter of engagement and looked it over. "Identification?"

Nick presented two passports: one navy blue with a golden eagle emblazoned on its cover, the other a bold red with a prim white cross painted upon its face. The porter examined both, then returned them. "I'll announce your arrival. Take a seat, please. Over there." He motioned toward a grouping of leather chairs.

But Nick preferred to remain standing and walked slowly through the great hall. He took in the elegantly dressed customers waiting for their favorite tellers and the gray executives hurrying across the shiny floor. He listened to the stubble of hushed conversations and the whisper of computer-assisted commerce. His thoughts drifted to the flight over from New York two nights earlier, and then back further, to Cambridge, to Quantico, to California. He'd been headed this way for years, without even knowing it.

A telephone buzzed behind the porter's lectern. The porter snapped the receiver to his ear and nodded crisply in time to his every grunted response. Moments later, Nick was being shown across the lobby to a bank of antiquated elevators. The porter walked ahead with perfectly measured strides, as if determined to establish the exact distance to the waiting elevator, and once there, made a show of sweeping open its smoked glass door.

"Second floor," he said, in his clipped voice. "Someone will be waiting for you."

Nick thanked him and stepped into the elevator. It was small with maroon carpeting, burled wood paneling, and a polished brass balustrade. Immediately, he caught scent of a medley of familiar fragrances: the blunt trail of stale cigar smoke; the nasal pinch of well-polished shoes, and most distinctly, the bracing note, at once sweet and antiseptic, of Kolnisches Wasser, his father's favorite eau de cologne. The masculine odors assaulted his senses, conjuring up a fractured image of his dad: wine black hair cropped unfashionably short; unblinking blue eyes capped by unruly eyebrows; stern mouth locked in a downcast expression of disapproval.