The Professor’s Secret Mistress

As a senior advisor in the field of Artificial Intelligence for the federal government, I had been stationed overseas on a high-level research fellowship for the past year.

During that time, security protocols were airtight. My contact with the outside world was sparse, restricted to encrypted check-ins and the occasional brief letter.

The moment the program concluded, my first instinct wasn't to celebrate; it was to call my daughter, Daisy. She had been grinding for two years to pass the Bar Exam, and the results were due any day. I dialed her for a video call, my heart thumping with a mix of pride and nerves.

When she picked up, the sight of her shattered me. Her eyes were swollen and bloodshotshe had clearly been sobbing for hours.

"Sweetie, its okay," I whispered, my voice thick with maternal instinct. "Dont worry about the results. Mom has plenty of money. We can pay for another prep course, another yearwhatever it takes."

As I spoke, I noticed the background. She wasn't in her sun-drenched bedroom. She was in the cramped, windowless pantry behind the kitchen.

Worse, I saw a flash of silver on her ear. A cheap piercing was buried in her lobe, and the skin around it was angry, red, and oozing with infection.

I didn't want to push her while she was so fragile, so I hung up and immediately called her father, Jonathan.

Jonathan answered with a huff of impatience, acting as if my concern was a nuisance. "Youve been gone a year, Catherine. Dont start micromanaging from across the ocean. Girls like to play dress-up; a piercing is normal."

Then came the sting. "Daisys been prep-testing for two years and still cant cut it. Meanwhile, Marinamy star studentaced her boards on the first try. I swear, sometimes I wonder if Daisy really carries my genes with a brain that slow."

My blood ran cold. After I hung up, a notification pinged on my phone. My secondary credit cardthe one Jonathan usedhad just been swiped for $28,000 at a boutique in Beverly Hills. A designer handbag.

Something was horribly wrong. I didnt hesitate. I resigned from my seven-figure consultancy role effective immediately and booked the first flight back to the States.

The moment I boarded the plane, I pulled up Marinas Instagram.

She had blocked me.

Fortunately, I had followed her burner TikTok account months ago out of professional curiosity. I refreshed her feed. There she was, preening in a video, posing from every angle with a brand-new, charcoal-grey Herms Birkin.

Thank you to my favorite person for the best gift ever. Im obsessed, the caption read.

$28,000. My money.

A sickening dread coiled in my gut. Since Id been abroad, we had hired a live-in housekeeper, Mrs. Higgins, to take care of Daisy and Jonathan. I called her, hoping for some clarity, but what I heard was worse than I imagined.

"Ma'am, I I was let go. Miss Marina insisted on it."

"Marina? Since when does a guest have the authority to fire my staff?" My voice rose an octave, drawing stares from the first-class cabin.

"She told me shes the lady of the house now. She said I was too old, too slow, and that I didnt cater to the Professors needs properly. She said from now on, shes the one in charge."

I nearly cracked my phone screen from gripping it so hard. A houseguesta student Jonathan was supposedly "mentoring"had staged a coup in my own home?

"Ma'am, please," Mrs. Higgins whispered, her voice trembling. "Just watch your back. Things aren't what they seem."

She hung up before I could ask more.

Trembling, I called our long-time driver, Bill. Bill had been with Jonathan for years, and I didn't entirely trust his loyalty, so I changed my tactics. I kept my voice casual, maternal.

"Bill, Im a little worried about Daisys spending lately. Is she buying all these luxury items because shes stressed about the Bar?"

Bill let out a short, dry chuckle on the other end. "Oh, that? Yeah, shes been on a bit of a spree. But honestly, maam, youve got the money. Even the Professor said its fine, so I wouldnt lose sleep over it."

I fell silent.

I knew my daughter. Daisy had been raised with a silver spoon, yes, but she was disciplined. She worked summer jobs. She used to say, Mom, thats your hard-earned money. I want to build my own empire.

Daisy wouldn't suddenly become a shallow shopaholic, especially not while failing the exam shed sacrificed her social life for.

Every red flag in my mind was screaming. This had Marina written all over it.

I couldn't wait. I paid the exorbitant fee to move my flight up to a direct red-eye.

When the plane touched down, it was 2:00 AM. I didn't call a car. I didn't tell Jonathan I was coming. I wanted to see the truth of this house with my own eyes.

The mansion was silent when I let myself in. I walked straight toward Daisys room, but through the cracked door, I saw a world that didn't belong to her.

The walls were lined with shelves of expensive, limited-edition vinyl toys and designer "blind boxes"hundreds of them. Daisy hated clutter.

I walked to the bed and touched the sheets. Silk. Cold, slippery, charcoal silk.

Daisy only ever slept on organic cotton.

The room was empty. Daisy wasn't there. At 2:30 AM, she should have been asleep in her bed.

The panic Id been suppressing flared into a full-blown fire. I remembered the video callthe dark, cramped background.

I walked to the hallway and pushed open the door to the small utility mudroom behind the laundry.

The smell of dampness hit me first. It was pitch black.

"Daisy?" I whispered.

"Mom Mom is that you?"

Out of the darkness came a voice so thin and terrified it barely sounded human.

I fumbled for the light switch. When the bulb flickered on, the breath left my lungs.

The tiny room was overflowing with discarded boxes, old newspapers, and broken appliances. And there, tucked between a rusted water heater and a stack of winter tires, was a thin cot on the floor.

My daughter, the girl I had raised to be a queen, was curled into a ball under a moth-eaten blanket. Her face was gaunt, her hair a matted mess. She looked like a trapped animal, blinking at the light with sheer terror in her eyes.

The moment she recognized me, the dam broke. She began to sob, great racking heaves that shook her entire frame.

"Mom you finally came back. Youre finally here."

My heart didn't just break; it turned to ash. I lunged forward, pulling her into my arms, feeling how bony her shoulders had become.

Before she could utter a single word of explanation, the door to the utility room slammed open.

"Catherine? What on earth are you doing here?"

Marina stood in the doorway, her face pale with shock. Behind her stood Jonathan, rubbing sleep from his eyes, looking annoyed rather than happy to see his wife.

Daisys body went rigid in my arms. She began to shake so violently her teeth chattered. She gripped my forearms, her knuckles white, but she didn't say a word.

I looked at themthe "star student" in her silk pajamas and my husband with his practiced frownand I felt a cold, murderous clarity.

"Jonathan," I said, my voice vibrating with rage. "Explain this. Now. Why is my daughter sleeping in a closet?"

Jonathan sighed, crossing his arms. "Catherine, don't be dramatic. Daisys had a rough go. She failed her exams again, shes been depressed. She told us she needed a 'minimalist space' to reflect on her failures. She chose to move in here. The girl is just being hard on herself."

He said it so casually, as if it were perfectly normal for a girl to move from a master suite to a windowless pantry.

"Reflect on her failures?" I stood up, keeping Daisy behind me. "You think Im an idiot? I know my daughter. She would never choose this. Youre lying through your teeth."

Jonathans face darkened. "Catherine, watch your tone. Shes my daughter too."

Marina stepped forward, reaching out a hand as if to comfort me. "Mrs. Archer, please don't be upset. Professor Hart is right. Daisys been very unstable lately. Weve all been so worried"

I slapped her hand away so hard the crack echoed in the small room.

"Shut your mouth. You have no standing in this house."

Marina gasped, stumbling back toward Jonathan.

"Get out," I hissed. "Both of you. Out!"

Marinas face twisted between a fake pout and genuine fear as she looked at Jonathan. He scowled at me, his ego clearly bruised.

"Fine. Take her to a room if you want. Well deal with your hysterics in the morning."

"To a room? Which room, Jonathan? Because it looks like this girl is living in Daisys suite."

Jonathan hesitated. "Well"

"Im staying there," Marina whispered, her voice regained its edge. "The Professor said it was a waste for such a large suite to sit empty while Daisy was reflecting."

"Youre staying there? On what authority? You are a guest. You are nothing."

"Catherine, enough!" Jonathan shouted. "Marina is my lead researcher. Shes staying here for the project. Its temporary."

I didn't answer him. Daisy was trembling so hard she could barely stand. I put my arm around her, guiding her out of that hole.

"Don't be afraid, Daisy. I'm here now. No one is touching you ever again."

I led her to the guest wing. After I got her into a warm bath and tucked her into a clean bed, I sat by her side, watching her sleep.

This wasn't my daughter. Her eyes were sunken, her skin sallow. She looked haunted. I stroked her hair, my mind racing. I was going to burn Marinas world to the ground, and Jonathan was going to pay for every second of this.

The next morning, I sat Daisy down. "Tell me about the Bar Exam, honey."

Daisy kept her head down, picking at her cuticles until they bled. I took her hands in mine and forced her to look at me. The tears started instantly.

Brokenly, the story came out.

Marina hadn't just been "mentoring." She had decided she wanted Daisys life. When the exam registration window opened, Marina had used her access to the house to log into Daisys account and change her elective modules to subjects Daisy hadn't studied.

"Dad told me I didn't have the brains for it anyway," Daisy sobbed. "He said I shouldn't compete with his 'star student.' And on the day of the exam the pens I brought, the ones Marina 'checked' for me the ink vanished from the paper within an hour. I handed in a blank exam, Mom. I had nothing."

This wasn't just a rivalry. This was a calculated assassination of my daughter's future.

I didn't say another word. I stood up and stormed into Daisys original bedroom.

Marina was standing in front of the walk-in closet, which was now bursting with designer clothes that weren't hers.

"How did you afford all this, Marina?" I asked, my voice dangerously low. "The $28,000 bag? The $5,000 shoes?"

Marina looked at Daisy, who was hovering in the doorway. "Daisy, tell your mom. Didn't you say you were overwhelmed by your things? Didn't you ask me to take them?"

Daisy shrunk back, her spirit so crushed she couldn't even find her voice.

Marina smirked, sensing her victory.

I walked over to her and grabbed her wrist, twisting it so the watch she was wearing caught the light. "The Cartier Tank. My graduation gift to Daisy. Why is it on your wrist?"

She tried to pull away, but I held her in a vice grip. I was a second away from showing her exactly how an Archer handles a thief when Jonathan appeared, grabbing my shoulder.

"Catherine, stop this! What is wrong with you?"

"Whats wrong with me? You brought this parasite into our home to gut our daughter! Look at this watch, Jonathan! You gave it to her!"

"Catherine, Daisy changed," Jonathan snapped. "She told me she didn't care about these 'material baubles' anymore because you make 'too much' money. I thought it was a waste to let it sit in a drawer, so I gave it to Marina as a reward for her hard work."

Daisy was shaking behind me. I stood my ground, my heart cold as stone.

"Now, move," Jonathan said, trying to push past me. "Marina has her final character and fitness interview for the Bar today. Its a big day. Dont ruin it with your delusions. Well talk when I get back from the lab."

He tried to shove me aside, but I didn't budge.

"Catherine, don't be petty," he hissed. "If word gets out that my doctoral student was harassed in my own home, my reputation is ruined. Is that what you want?"

Marina started to squeeze out fake tears, clutching Jonathans arm. "Professor, Im going to be late. What am I going to do?"

Jonathan actually pushed mehard enough that I stumbled back. "Go. Ill handle her."

He led Marina out, leaving me standing in the wreckage of my family.

I forced myself to breathe. To think like the strategist I was.

I took Daisy to the kitchen, but the new cooka woman I didn't recognizedidn't even look up. "Breakfast is over. The Professor and Miss Marina ate early. Theres nothing left."

"Excuse me?" I stepped into her space. "This is my house. You will cook for my daughter, the lady of this house, right now."

The woman rolled her eyes. "One meal won't kill her. Ill get to it when Im done cleaning the Professors study."

As she turned, I caught a glimpse of her profile. She looked remarkably like an older version of Marina.

I immediately texted my assistant, Sarah. Run a background check on our new cook and Marina Cross. I want to know every blood relation.

After a silent, tense breakfast, I took Daisy to a private clinic.

The doctor was a woman Id known for years. After two hours of tests, she pulled me into her office, her expression grim.

"Claire, your daughter is in a bad way. Shes showing clear signs of PTSD, severe clinical depression, and anxiety."

She handed me a folder. "But that's not all. Her blood work she has elevated levels of lead and mercury. Its not enough to kill her quickly, but its enough to cause brain fog, memory loss, and extreme fatigue. Its consistent with long-term, low-dose exposure."

I felt the room tilt. I held onto the desk to stay upright.

In the safety of the doctor's office, Daisy finally opened up. She told me how Marina would hide her textbooks. How she would put sewing needles in Daisys chair. How she would "borrow" Daisys clothes and return them ruined.

And Jonathan? He didn't just ignore it. He weaponized it. He told Daisy she was a disappointment. He cut off her allowance, telling her she had to "earn her keep" by doing Marinas laundry and cleaning the house while I was away.

But the final blow was what Daisy whispered at the very end.

"Mom I saw her coming out of Dads room at night. She was wearing your robes. I tried to call you, but they took my phone. They said they were monitoring my mental health. If I fought back, Dad would let her hit me."

The world went white. My husband wasn't just neglectful. He was a predator, and he had turned our home into a house of horrors.

"Daisy," I said, my voice like tempered steel. "Today is Marinas final interview for the Bar, right? Come on. Were going to give her a gift shell never forget."