“Please… don’t make me do that…” whispered the nun, squeezing her legs together with what little strength she had left — and when the rancher realized what she was running from, he knew that this secret could set the whole town ablaze.

The first thing Don Alejandro Morales saw was a dark stain lying in the middle of the dry grass.

From a distance it looked like a dead animal.

Barely a motionless shape on the sun-baked plains of northern Mexico, too still, too out of place to be anything alive. Alejandro was riding his horse along the fence on the east side of his ranch, near Saltillo, Coahuila, as he had done every morning for more than thirty years, when that silhouette caught his eye.

His horse stopped almost instinctively.

Alexander squinted under the white glare of midday.

Summer in Coahuila wasn’t just about heat.

It was punishment.

The air trembled above the earth as if the desert were breathing fire. The prickly pear cacti seemed like motionless figures watching the horizon. And the grass, dry and cracked, yielded to the hot wind.

Alexander spurred his horse and approached.

And then he froze.

It wasn’t a deer.

She was a woman.

A young nun, dressed in a black habit, lay in the open ground as if the desert had cast her out and left her there. There was no cart. No donkey. No horse. No clear trace that anyone had accompanied her. Only faint marks in the earth, as if she had walked until her body could no longer obey her.

Alejandro dismounted immediately. His boots kicked up red dust as they touched the ground.

He knelt beside her.

The first thing that struck him was seeing her barefoot.

The soles of her feet were cracked open by the stones, thorns, and the heat of the earth. There was dried blood between her toes. Her ankles were marked by the chafing of her habit. Her skin was burned by the sun. Her body burned like a hot iron.

Alejandro placed two fingers on his wrist.

The pulse was still there.

Weak.

Fast.

Too fast.

He was about to help her up when he saw her lips moving.

He thought it would be a meaningless moan.

He leaned forward.

And then he heard her.

—Please… don’t force me to do that…

Alejandro frowned.

—Daughter, calm down. Nobody is going to do anything to you.

But she, almost unconscious, squeezed her legs together tightly. As if even fainting she were trying to protect herself from something.

Her breathing was trembling.

The fingers of her hands closed over the fabric of the habit.

“That’s forbidden…” she murmured afterward, her voice barely a whisper. “That’s forbidden…”

Alejandro remained motionless.

In his fifty-six years, he had seen men die from drought, land disputes end in gunfire, and entire families lose everything because of a bad season. He had seen fear.

But that wasn’t the fear of someone lost in the mountains.

It was someone else.

A deeper one.

Older.

A fear clinging to the body.

The nun barely opened her eyes.

Blues.

Cloudy.

Filled with terror.

And for a moment, seeing him bend down to help her, she flinched as if she thought he too was going to touch her in a way he shouldn’t.

That stirred something inside him.

Because a woman on the verge of fainting doesn’t beg like that for nothing.

Alejandro took off his hat, shaded her a little with his body, and picked up his canteen. He moistened a handkerchief and carefully dabbed it on her lips, without intruding more than necessary.

She murmured something again.

This time it wasn’t a complete sentence.

It was barely a broken plea.

And one word.

Just one.

It sounded like a confession and an accusation at the same time.

Convent.

Alejandro looked around.

The wind continued to pass over the empty plain as if nothing was happening.

But now the silence was no longer the same.

Because suddenly that woman lying in the middle of the desert didn’t look like a simple dehydrated nun.

He looked like someone who had escaped.

And if he had really escaped, then there was a much darker story behind it than anyone in town would be willing to believe.

Why would a nun flee barefoot through the desert until she nearly collapsed under the sun?

What exactly was “that” thing she said was forbidden… and why did she repeat it as if it were burning her mouth?

And what secret of the convent could make a woman prefer to die on the plain rather than return?

Alejandro didn’t ask anything else at that moment. The sun was beating down so fiercely that any conversation was secondary to the urgent matter: that the girl didn’t die right there, lying in the middle of the desert like an abandoned animal.

He lifted her carefully. Her body was light, too light for a grown woman. She weighed as if she hadn’t eaten properly in weeks. When he settled her on the saddle, she barely reacted. She just squeezed her legs together again and murmured something unintelligible.

“Calm down, daughter,” he said softly. “You’re safe now.”

I didn’t know if he could hear me.

But he said it anyway.

Alejandro’s ranch was almost twenty minutes away on horseback. The journey seemed longer than usual. Every now and then he turned to look at the young woman, fearing she might stop breathing.

When he finally crossed the wooden gate, his daughter Clara came out of the house.

-Dad?

He stopped when he saw the nun.

—Who is she?

“I don’t know,” Alejandro replied. “But if we don’t help her, she won’t make it through the night.”

Clara ran to open the door.

The two of them laid her down in one of the small rooms that her grandmother had previously occupied. Clara brought water, a damp cloth, and some broth that was still warm in the kitchen.

The girl trembled even in her sleep.

His feet were full of thorns.

Clara took almost an hour to clean them with tweezers and alcohol.

“My God…” he murmured as he pulled out another thorn. “How far has he walked like that?”

Alejandro did not respond.

He was sitting in a chair next to the bed, looking at the young woman’s face.

She didn’t look older than twenty-three.

Perhaps less.

She had delicate features, fair skin tanned by the sun, and a strange expression even in sleep. As if her body didn’t know how to relax.

After a while, Clara broke the silence.

—Dad… where did it come from?

Alejandro took a while to respond.

—On the desert side.

Clara looked up.

—From the San Gabriel convent?

Alejandro looked at her.

That convent was about fifteen kilometers from the ranch. Isolated, old, built on a rocky hill where the wind blew all year round.

The nuns there hardly ever went down to the village.

They lived in seclusion.

Silent.

Nobody knew much about what was going on inside.

—That’s what she said—Alejandro finally replied. —Just one word.

Convent.

Clara swallowed.

—But… why would I have walked all the way here?

Neither of them answered.

Because they didn’t like the answer that was beginning to form in their heads.

That night the young woman woke up.

It was shortly after two in the morning.

Alejandro was still sitting in the same chair, half asleep.

The sound of a small gasp made him open his eyes.

The nun was looking at the ceiling.

He was breathing fast.

When she turned her head and saw Alejandro sitting next to her, her body immediately tensed up.

He tried to get up.

The pain in her feet made her let out a small scream.

“Relax,” Alejandro said, raising his hands to show he wasn’t going to touch her. “You’re in my house. Nobody’s going to hurt you.”

She stared at him.

His blue eyes were filled with distrust.

-Where…?

—At my ranch.

She swallowed.

He looked around the room as if trying to understand where he was.

Then something changed in his expression.

—Did they find me?

—I found you —Alexander replied—. On the plain.

She closed her eyes for a second.

She seemed relieved.

But only for an instant.

Then the fear returned.

—They can’t know I’m here.

Alejandro frowned.

-Who is it?

The young woman did not respond.

He looked at the door.

Then the window.

As if he expected someone to walk in at any moment.

—Please —she whispered—. Don’t say you saw me.

Alejandro rested his elbows on his knees.

—Daughter, you walked barefoot through the desert until you almost died. Something very serious must have happened.

She lowered her gaze.

Her hands began to tremble.

“If they come…” she murmured, “they’ll say I’m crazy.”

Alejandro felt a strange weight in his chest.

-Who is it?

The nun took a long time to answer.

When he did, his voice was barely a thread.

—Those who rule the convent.

Silence settled in the room.

The wind gently rattled the roof slats.

Alejandro thought about the San Gabriel convent.

He thought about the priests who visited him from time to time.

He thought about the stories that the townspeople murmured but never said out loud.

—What did they do to you?

The young woman took so long to answer that Alejandro thought she wouldn’t.

But he finally spoke.

—It wasn’t just me.

Alejandro felt something tightening inside him.

—So who else?

She slowly raised her gaze.

Her eyes filled with tears.

—To all of them.

The silence that followed was heavier than the previous one.

“That thing you heard,” she said afterward, recalling her words in the desert. “That thing I said is forbidden…”

Alejandro looked at her attentively.

The nun took a deep breath.

—They force us.

The word hung in the air in the room.

Alejandro felt a chill run down his spine.

-That?

She closed her eyes.

Tears began to run down his temples.

—To obey things that God would never ask.

Alejandro remained motionless.

He had lived in that land for decades.

I had seen many things.

But I’d never heard of anything like that.

-Who?

The answer came out broken.

—Father Esteban… and the men who come at night.

The name fell like a stone.

Because Father Esteban was not just any priest.

He was the most respected man in the region.

The one who blessed the fields.

The one who appeared at all the town’s parties.

The one everyone called “a saint”.

The young woman continued speaking.

—When I arrived at the convent I was seventeen years old.

Her voice broke.

—I thought I was going to serve God.

Alejandro felt his stomach churn.

“But at night…” she whispered, “they made us go down to the basement.”

Silence returned.

Heavier.

Darker.

—And there… —he continued— began the confessions that no one should tell.

Alejandro clenched his fists.

The young woman looked at him.

—Those who refused… disappeared.

The wind started blowing again outside.

Stronger.

“How many?” asked Alejandro.

She shook her head slowly.

-I don’t know.

Alejandro felt something ignite inside his chest.

An old rage.

Deep.

But there was something more.

“If you escaped…” he said, “they’re going to look for you.”

The nun nodded.

—They must be looking for me by now.

And then he said something that made Alejandro freeze completely.

—Because I took something that they can’t let leave that convent.

Alejandro frowned.

-What thing?

The young woman slowly raised her hand.

Beneath her habit, hanging from a hidden chain, she pulled out a small iron key.

Old.

Dark.

“The basement,” he whispered. “The only door they still haven’t been able to open without me.”

Alejandro understood something at that moment.

That secret wasn’t just a terrible story.

It was a test.

One that could destroy the most powerful men in the village.

The nun looked out the window again.

Her voice came out trembling.

—If that door opens… everyone will know what they’ve been doing.

And right at that moment…

The sound of an engine broke the silence of the early morning.

A vehicle stopped in front of the ranch gate.

The lights shone through the bedroom window.

The nun froze.

His fingers gripped the key tightly.

—They’ve arrived.