"She tried to recruit me for a study," the young man with the number pinned to his shirt said."Something about measuring cognitive function under extreme dehydration.I declined because the consent forms made it sound pretty intense—like, they'd have us running in heat chambers while restricting fluid intake."
"Did Jordan Rodriguez or Jessica Ramirez participate in that study?"
Nobody seemed certain.Rachel pulled out her phone and scrolled through messages."Jessica mentioned something about participating in research.Let me see if I can find the text."She squinted at her screen."Here.From three weeks ago.She said she'd signed up for a performance study with Dr.Mendez and was excited about the potential benefits for her Sonoran 100 prep."
Kari took down the information, then asked for Dr.Mendez's contact details and the location of her practice.The runners were happy to provide both, along with a litany of opinions about Mendez's controversial methods.Some praised her innovative approach to sports science.Others considered her reckless, more interested in publishing groundbreaking research than protecting her patients' safety.
By the time Kari left the store, the runners were heading out for their group run—safety in numbers, nobody willing to train alone.She sat in her vehicle and pulled up Dr.Alicia Mendez's website on her phone.The physician had an impressive resume: degrees from Stanford and Johns Hopkins, fellowships in sports medicine and exercise physiology, published papers in peer-reviewed journals.
Kari clicked through to Mendez's recent publications.Most were technical articles about lactate thresholds and VO2 max optimization, the kind of dense scientific writing that required a medical degree to parse.But two papers caught her attention: "Adaptive Responses to Controlled Dehydration in Elite Athletes" and "Cognitive Resilience Under Extreme Physiological Stress."
The abstracts described studies where participants were subjected to progressively intense dehydration while performing endurance activities.The research claimed to demonstrate that athletes could be trained to maintain performance at hydration levels previously considered dangerous.The papers acknowledged the risks but argued the potential benefits justified careful experimentation.
Kari dialed Maria Santos.
"Tell me you've got something," Maria answered."Because I've been chasing my tail with Dalton's alibi for the Rodriguez murder, and so far everything checks out."
"Dr.Alicia Mendez.Sports medicine physician.How much do you know about her?"
"The name's come up.She treats half the ultra-marathon community in Phoenix.Why?"
"She's been conducting controversial research on extreme dehydration.All three victims were connected to her—either as patients or research subjects.And her methods involve pushing athletes to hydration levels that sound a lot like what killed our runners."
Maria was quiet for a moment."You think she's experimenting on people?Using actual races as her test conditions?"
"It looks like that's a possibility."Kari started her engine."Can you pull her medical license records?Any complaints filed, any disciplinary actions?"
"I'm on it.What are you going to do?"
"Pay Dr.Mendez a visit.See if she's willing to discuss her patient list and research protocols."
"Kari, if she's involved, showing up unannounced could spook her.We need to be strategic about this."
"I'm not going to accuse her of anything.Just ask questions."Kari pulled out of the parking lot, heading toward the address she'd noted from Mendez's website."If she's innocent, she'll cooperate.If she's not, maybe she'll make a mistake."
"Or she'll lawyer up."
"Then we'll know she's got something to hide."
Maria sighed."All right.But keep your phone on.If things go sideways, I want to know immediately."
Dr.Mendez's practice was located in an upscale medical complex in North Phoenix.The waiting room had leather furniture and the receptionist looked like she'd stepped out of a luxury car commercial.Kari approached the desk and showed her badge.
"I need to speak with Dr.Mendez.Is she available?"
The receptionist's smile faltered."Dr.Mendez is with a patient right now.Do you have an appointment?"
"This is regarding an active investigation.I can wait, but I will need to speak with her today."
The receptionist made a call, speaking in low tones Kari couldn't quite catch.A moment later, she hung up and nodded."Dr.Mendez can see you in fifteen minutes.Please have a seat."
Kari sat, using the time to review her notes.The pattern was becoming clearer—three elite runners, all preparing for the same race, all connected to a physician whose research involved exactly the kind of extreme conditions that had killed them.It wasn't proof, but it was the strongest connection she'd found so far.
Kari wasn't sure what she was going to learn by directly confronting Dr.Mendez.On the one hand, arranging a meeting now risked spooking the doctor, as Maria had pointed out.On the other hand, it gave Kari the chance to look into a suspect's eyes and judge for herself whether or not this person was hiding something.
Cases were built on evidence.But they were often driven by a detective's instincts, and Kari's instincts had served her well so far.
The door to the back offices opened, and a woman in a white coat emerged.Dr.Mendez had the lean frame of someone who practiced what she preached, her runner's build evident even beneath the white coat.She wore her dark hair pulled back in a way that suggested efficiency over style, and when she shook Kari's hand, her grip was firm, her eye contact direct.
