Look for the tall, pinkish granite skyscraper with a unique curved top-directly ahead, towering between two other sleek buildings, that’s the United Bank Tower, now called the Wells Fargo Center.
All right, here’s a story to make your heart race faster than a sprint to the last cupcake at a birthday party! The year was 1991, and this soaring tower-nicknamed the “cash register” for its distinctive notch at the top-witnessed one of the most mysterious and infamous crimes in Denver’s history: the Father’s Day Bank Massacre. Imagine a quiet Sunday morning, June 16. The streets are empty, but inside, the air is thick with tension in the hidden corridors and vaults below this very building. At just after 9 AM, a man in a gray sport coat and brown fedora hat steps out of a side freight elevator, falsely claiming to be a bank vice president. Here, in the windowless depths, he’s about to commit a crime that still leaves people scratching their heads.
He starts by forcing a lone guard, William McCullum Jr., down to the subbasement, and in a horrifying moment, McCullum is killed. The robber pockets the guard’s pass card, then stalks through tunnels and stairwells-setting off alarms as he goes. It’s a high-stakes game of cat and mouse. Eventually, he forces two more guards into a battery room and shoots them, then finds the fourth guard, who returns at the wrong moment. In total, the intruder fires eighteen shots, hitting every target but one-a chilling mark of expertise. Not a single guard stood a chance-they’d all been stripped of their weapons months before by new policy. Even more unsettling, the killer collects his spent shell casings and tampered with the evidence, leaving just those eighteen bullets as grim breadcrumbs for the detectives.
On to the real loot heist! With the guards dispatched, the gunman opens the vault, where six stunned employees are busy sorting deliveries. He orders everyone down and demands the vault manager stuff a satchel with cash. The air is thick with fear-can you smell the acrid tang of adrenaline and vault dust yet? He forces everyone into a tiny “mantrap” room-probably not as fun as it sounds-before making his getaway, locking them inside with nothing but a broken spoon to make their escape. Oh, and here’s where it gets extra dramatic: the employees actually manage to spring themselves loose after twenty long minutes using that humble spoon. Houdini would be impressed.
All told, the robber hauls away $200,000-which, believe it or not, is just a fraction of the millions sitting in that vault. Here’s where things get wild: the police soon arrest a retired Denver cop, James W. King, whose life starts to sound like a late-night detective show. There are maps, fake IDs, and a suspicious new safety deposit box-but not a scrap of the missing money or the murder weapon. The trial is a national spectacle, aired live on Court TV. The prosecution paints King as the perfect mastermind, but the defense juggles jaw-dropping alternate suspects-including a neighbor who claims King was mowing the lawn at the exact moment of the crime. Eyewitnesses go back and forth, nobody can agree on a mustache, and at one point the defense tricks witnesses with a photograph of-wait for it-a mustachioed Harrison Ford. Denver’s own Han Solo wouldn’t stick around for this plot!
After weeks of nerve-wracking testimony and 53 hours of jury deliberation, King is found not guilty. The verdict stuns the city, and the case goes cold, right here in the “cash register” building you see now. No one has ever found the stolen money, and the whispers about what really happened ping-pong around Denver to this day. Four guards lost their lives, and a cloud of mystery hangs over these streets-proving you can’t always bank on justice, especially when the clues vanish as quickly as the loot.
So, whether you’re wondering if the perfect crime is possible or just curious if anyone’s ever found money stashed in a Denver attic, this stop proves the city’s history is every bit as dramatic as a Hollywood thriller. Ready for a grand hotel and a ghost tale next? Let’s keep strolling!
