SPACE INVADERS

The Man Who Knew Too Much

George Leonidas Leslie moved to New York in 1869, the same year the Brooklyn Bridge began construction. The city was still reeling from the effects of the Civil War, which had come to a bloody end only four years earlier; displaced families and internal immigrants with battle-scarred bodies roamed the streets looking for work, and the army's impenetrable forts and armories still loomed over distant neighborhoods like castles. Away from all the shadows and poverty, in an ever-increasing blaze of artificial light, Manhattan was lurching forward into the so-called Gilded Age, as industrialists, financiers, and railroad barons brought with them a rising tide of brick and limestone mansions, with elaborate private gardens, art galleries, hidden vaults, and ballrooms. The disparities in wealth and privilege could not have been more noticeable — or more of an open dare, an irresistible challenge, for someone freshly arrived in the city intent on leapfrogging all the darkness and dirt, conning his way directly into the comfortable halls of the well-to-do.

At the time, New York was just reaching the delirious pace of acceleration that would make it the global capital of the twentieth century, an icon of American entrepreneurialism and a real-time test bed for what a modern city should be. New technologies were emerging and interacting with one another in ways that had not — indeed, could not have — been anticipated. No one knew what form the puzzle of the city would soon take. The invention of the elevator in 1853 would have urban effects beyond even the most optimistic forecasts, sending buildings soaring into the sky, while an experimental pneumatic underground transportation system prototyped beneath Broadway by inventor Alfred Ely Beach would, years later, inspire the great labyrinth of the New York City subway system.

Leslie had been trained as an architect at the University of Cincinnati, where he graduated with honors. Always with one eye on the buildings taking shape around him, he would stroll past the buzzing construction sites of Fifth Avenue — supermansions built using so much rock, they were more like mountains than houses — and go for long walks along the city's docks, watching the boroughs knit themselves together as the elegant and monumental spine of the Brooklyn Bridge took shape. He was charismatic, well connected, and could have worked for any of the wealthiest clients in the city, from private bankers to financiers.

But his first thoughts upon arrival were not about joining the parade of design and construction on display, still less about how his own remarkable architectural talents might help to beautify the city for those who could never afford to live like kings.

His first thoughts were that he could use his architectural skills to rob the place blind.

* * *

What followed would inaugurate one of the most spatially astonishing crime sprees in U.S. history. Nineteenth-century New York City police chief George Washington Walling estimated that Leslie and his gang were behind an incredible 80 percent of all bank robberies in the United States at the time, until Leslie's betrayal in the spring of 1878. This would include the great Manhattan Savings Institution heist of October 1878, which netted nearly $3 million from one of the most impregnable buildings in North America. Leslie had been planning the heist obsessively, continuously, down to the building's every architectural detail, for more than three years — but he would be murdered by a member of his own crew before he could participate.

Seduced by the lavish lifestyles of his potential clients and future colleagues, Leslie gave in to temptation and began to misuse his professional training. To his peers, he seemed to have a long and successful career ahead of him as a designer of private homes, banks, and offices. To Leslie, this was not nearly enough — and either way, it was far too slow. Leslie was debonair and ambitious, talking his way up the social hierarchy and seeking out the owners of businesses and financial institutions, including John A. Roebling, engineer of the Brooklyn Bridge, and Wall Street financier Jim Fisk.

Leslie would wheedle his way into private gatherings, not just for the cocktails and social camaraderie, but to case the place. Oh, he might say to a wealthy businessman or bank owner at a dinner party, as if he had just thought of something off the top of his head. I'm an architect, you know — I'd love to see the blueprints for your new bank downtown. I'm working on one myself and I'm having trouble with the vault. If I could just take a quick look, I'd be most appreciative. Do you have the plans here? Through good old-fashioned social engineering, Leslie would thus gain access to key documents or structural drawings of future targets — a backstage pass to the entire metropolis — the way a car aficionado might ask to take a peek under your hood. No one thought twice of it — why would they? Leslie dressed well, he had been trained as an architect, and his illicit spatial knowledge of the city only continued to grow.

At the same time, Leslie went to work cultivating contacts on the opposite end of the social ladder: tradesmen of a different kind, and experts in darker undertakings. Leslie's secret weapon here was a notorious fence of stolen goods, the Prussian-born Fredericka Mandelbaum, widely known as Marm. Her eye for trickery and subterfuge extended even to architecture: she had a dumbwaiter installed inside a false chamber in her home chimney, where she could stash sensitive items in a rush. Rather than opening or closing the flue, a small lever in the fireplace would lift her hot goods to safety. In her own way, Mandelbaum was a Dickensian supervillain, complete with a labyrinthine lair on Manhattan's Lower East Side. Her thieves' den there boasted multiple entrances, unmarked doors, armed guards, and even a disguised access point through a pub on Rivington Street. These all led into a goods yard where deals and trades could be made.

More important, for Leslie, Mandelbaum owned a cluster of warehouses over the river in Brooklyn where she would store, hide, and sell stolen merchandise. On the receiving end of her unpredictable generosity, Leslie was given free rein to use those warehouses as a kind of architectural training ground for future burglaries.

Here Leslie's spatial skills truly flourished: deep in the vast interiors of Mandelbaum's warehouses, with almost no risk of detection or exposure, feeling safely isolated from Manhattan by the still-unfinished Brooklyn Bridge, he built his duplicates and copies at full scale. If Leslie could not obtain a set of blueprints, he would simply draft his own, depositing some money in the bank he planned to rob, then using his time in the space to look around and study his surroundings. Beyond his training and charisma, Leslie was preternaturally...