Why Did the Anglin Brothers Go to Alcatraz? Their Story

When people hear the name Alcatraz, one story seems to come up again and again: the mysterious escape of John and Clarence Anglin and Frank Morris in June 1962.

But before the homemade raft, fake heads, and midnight escape captured the public imagination, there was a more basic question: Why did the Anglin brothers go to Alcatraz in the first place?

The answer begins long before that famous night.

John and Clarence Anglin were convicted criminals with histories that included bank robbery and previous escape attempts. Alcatraz was not simply a place they volunteered to go. Like other federal prisoners considered difficult to manage or particularly prone to escape, they were transferred to the maximum-security prison on Alcatraz Island.

And once they arrived on “The Rock,” the brothers eventually became part of the story is also one of the reasons an Alcatraz Tour remains a popular way to explore the prison's history.

Who Were the Anglin Brothers?

John William Anglin and Clarence Anglin were brothers from the American South who became involved in criminal activity, particularly bank robbery.

By the time they reached Alcatraz, both men had already spent time in other prisons. Their previous experience behind bars would later become important because they were familiar with prison routines and, according to FBI records, had attempted escapes before.

The FBI states that John Anglin arrived at Alcatraz in 1960, while his brother Clarence arrived in early 1961. They already knew Frank Morris from previous prison stays.

That connection would eventually lead to their extraordinary escape attempt.

Why Were the Anglin Brothers Sent to Alcatraz?

The simplest answer is that Alcatraz was a maximum-security federal penitentiary designed to hold prisoners considered difficult to control or likely to escape.

The prison, located on an island in San Francisco Bay, operated as a federal penitentiary from 1934 until 1963. Understanding what Alcatraz inside was like helps explain why the prison was considered so difficult to escape from. Its isolation, strict security procedures, guard towers, and surrounding cold waters made it one of the most intimidating prisons in the United States.

John and Clarence had already demonstrated that they were willing to attempt escapes.

In fact, an FBI document concerning the brothers records that Clarence attempted to escape from the U.S. Penitentiary at Leavenworth in 1960 by hiding inside a metal breadbox. John was accused of helping him with the attempt, although federal prosecutors ultimately declined to prosecute John for lack of sufficient evidence. Clarence pleaded guilty to the escape-related charge and received an additional two-year sentence to run consecutively with his existing bank-robbery sentence.

So, when asking why did the Anglin Brothers go to Alcatraz, their history of criminal convictions and escape attempts provides important context.

Alcatraz was precisely the kind of institution intended to contain prisoners who had demonstrated that ordinary prison security might not be enough.

John and Clarence Anglin at Alcatraz

John and Clarence did not arrive at Alcatraz together.

John arrived in 1960, followed by Clarence in early 1961. Eventually, they were housed in neighboring cells, putting them in close proximity to Frank Morris.

Morris had his own history of criminal convictions and prison escapes. The three men formed a friendship, and before long, they were working on something far more ambitious than an ordinary prison escape.

They were planning to get off Alcatraz.

How Did the Anglin Brothers Plan Their Escape?

The escape took place under the cover of darkness, making the nighttime setting an important part of the story. Visitors interested in experiencing the island after dark can learn more about an Alcatraz Island night tour.

The escape plan was remarkably elaborate.

According to the FBI investigation, the men began preparing in late 1961. They used crude tools to gradually enlarge openings around the ventilation grilles at the backs of their cells.

One of the tools was reportedly made using the motor from a broken vacuum cleaner.

Behind the cells was a utility corridor that the prisoners could use to move around without being immediately seen by guards. Above the cell block, they created a concealed workshop where they prepared the equipment needed for their escape.

Their preparations included:

• Homemade paddles

• Makeshift life preservers

• A large inflatable raft

• Tools for opening their cell vents

• Fake heads designed to fool guards during nighttime checks

The raft itself was made from more than 50 raincoats. The prisoners carefully joined the material together and used prison steam pipes to help seal the seams.

It was an extraordinary amount of work for three prisoners operating under constant surveillance.

The Night the Anglin Brothers Escaped

On the night of June 11, 1962, the plan finally went into action.

The three men—John Anglin, Clarence Anglin, and Frank Morris—left their cells through the openings they had secretly enlarged.

Another prisoner, Allen West, had been involved in the planning but could not get out of his cell in time.

The three successful escapees reached the roof, climbed down from the cell house, crossed the prison grounds, and made their way to the northeastern shore of Alcatraz.

They then launched their homemade raft into San Francisco Bay.

The next morning, guards discovered something strange.

The prisoners were missing.

Their beds, however, appeared occupied.

The men had created dummy heads using materials including plaster, paint, and real human hair. From a distance, the heads apparently looked enough like sleeping prisoners to deceive guards during the early-morning bed check.

That discovery transformed the case into one of the most famous prison mysteries in American history.

Did the Anglin Brothers Survive?

This is where the story becomes much harder to answer.

No one knows with certainty what happened to John and Clarence Anglin after they left Alcatraz.

The FBI investigation recovered pieces of homemade equipment, including paddle-like objects and parts of a life vest. The waters surrounding Alcatraz can also be viewed from a San Francisco Bay cruise, offering visitors a different perspective on the route the escapees may have attempted.

Investigators also found evidence connected with the prisoners' preparations.

However, no confirmed evidence established that the three men successfully reached the mainland.

The FBI eventually concluded that the cold water, strong currents, and other conditions made survival difficult. Investigators also found no credible evidence during their investigation that the men remained alive elsewhere.

The FBI officially closed its investigation on December 31, 1979, and transferred responsibility for the case to the U.S. Marshals Service.

Yet the mystery never completely disappeared.

Why Is the Anglin Brothers' Story Still So Fascinating?

Part of the fascination comes from the setting.

Alcatraz was widely regarded as one of America's toughest federal prisons. It sat in San Francisco Bay, surrounded by cold water and strong currents. The idea that three prisoners could secretly construct a raft, leave their cells, escape the prison building, and disappear into the darkness sounds almost unbelievable.

But the FBI investigation confirms that the escape itself happened.

What remains unknown is what happened after the men left the island.

Did they drown?

Did they reach another island?

Did they somehow make it to the mainland?

The evidence has never provided a definitive answer.

That uncertainty is exactly what keeps people asking questions about the Anglin brothers decades later.

Why Did the Anglin Brothers Go to Alcatraz? The Short Answer

If you're looking for a straightforward answer to “Why did the Anglin Brothers go to Alcatraz?”, it comes down to their criminal histories and previous escape attempts.

John and Clarence Anglin were convicted criminals who had already spent time in federal prisons. Their backgrounds included bank robbery, and both became associated with escape attempts. Alcatraz was a maximum-security federal penitentiary specifically designed to hold prisoners who presented significant security and escape concerns.

But ironically, Alcatraz did not end the brothers' attempts to escape.

Instead, it became the setting for their most famous attempt.

In June 1962, John and Clarence Anglin, together with Frank Morris, disappeared from their cells and launched a homemade raft into San Francisco Bay.

They were never conclusively found.

The Anglin Brothers and Alcatraz Today

Walking through Alcatraz today, it can be difficult to imagine how three prisoners managed to carry out such a complicated plan under the eyes of prison guards.

For visitors planning an Alcatraz day trip, seeing the cell blocks, escape route, and surrounding island in person can add another dimension to the story.

The escape route, the cell openings, the roof, and the surrounding waters have become central parts of the island's history.

For visitors, the story is more than just an escape tale. It offers a glimpse into what life inside Alcatraz was like—and shows just how determined some prisoners were to regain their freedom.

The Anglin brothers may have entered Alcatraz as federal prisoners with a history of escape attempts, but they left behind something much bigger: a mystery that continues to capture the imagination of visitors to the island.

Final Thoughts

The question “Why did the Anglin Brothers go to Alcatraz?” has a fairly straightforward historical answer. The more intriguing question is what happened after they got there.

Their journey from federal prisoners to two of the most recognizable names in Alcatraz history is a reminder of why the island continues to fascinate millions of people.

The prison may have closed in 1963, but the mystery of John and Clarence Anglin—and their incredible 1962 escape—still has a place in the story of Alcatraz.

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