The Eclipse Observatory

📕Story Background

The Weber Astronomical Observatory, perched at 3,200 meters in the Swiss Alps, was buzzing with anticipation.A total solar eclipse—the first visible from this location in over a century—was mere minutes away.

At 11:00 AM, three minutes before totality, Professor Marcus Webb, the observatory's director and a world-renowned astronomer, was found collapsed on the floor of the main telescope dome.He was dead.His eyes were frozen open, his expression locked in pure shock.

The on-site medic initially attributed the death to acute cardiac arrest—perhaps triggered by the altitude combined with the excitement of the celestial event.But Inspector Lange from Bern noticed something: Marcus's left hand clutched a button, small and brass-colored, that didn't belong to the observation suit he was wearing.

More troubling still, the observatory's precision laser alignment system—a high-powered laser emitter used to calibrate the telescope's pointing mechanism—sat powered on beside the body.Its housing was warm to the touch, suggesting recent use.Yet this equipment was only supposed to be activated during monthly maintenance cycles.

Three people close to the victim emerged as suspects:

Dr. Elena Vasquez, Marcus's research partner of twelve years, claimed she had been in the control room monitoring instruments throughout the eclipse, never once leaving her station.

Thomas Caldwell, Marcus's estranged son who had arrived at the observatory three days earlier under the pretense of reconciliation, said he'd been outside photographing the entire eclipse sequence.

Dr. Yuki Tanaka, a visiting Japanese astronomer collaborating on the project, stated she had been alone in the observatory's library, organizing data from the previous night's observations.

As Inspector Lange stepped into the dome room, a faint smell of ozone—the telltale signature of high-powered laser interaction with air molecules—caught his attention.On the floor near the laser emitter, tiny fragments of glass glittered under the emergency lights, like shards of a shattered optical component.

The inspector gazed out through the dome's opening at the brightening sky.The eclipse was ending.And he already knew who had killed Marcus Webb.

Suspects

Dr. Elena Vasquez:

"I was in the control room the entire time—from half an hour before the eclipse began until well after totality ended.Marcus and I had worked together for twelve years. Our upcoming paper was going to revolutionize the field. Why would I kill him?The button? I don't know whose it is. Maybe it fell off his own clothing."

Thomas Caldwell:

"I was outside during the eclipse, photographing the whole sequence—I wanted to capture this moment as a symbol of my fresh start with my father.But my camera malfunctioned around 10:40—probably from when I dropped it earlier—so I missed the final minutes before totality.The button? It's from my jacket. I lost it that morning while helping Dad move telescope equipment, but that was hours before anything happened."

Dr. Yuki Tanaka:

"I was alone in the library during the eclipse, organizing data.Marcus did plagiarize parts of my research, and yes, I wrote some very harsh things about him in my notebook. But academic disagreements don't make me a murderer.And that button isn't mine—I was wearing a zip-up outdoor jacket that day."

🔍Known Clues

1. A faint ozone smell lingered in the dome room—the telltale signature of high-powered laser interaction with air molecules.

2. The laser alignment system's power indicator was still blinking, its housing warm to the touch, indicating recent use.

3. Marcus's smartwatch recorded an abnormal heart rate spike at exactly 10:47 AM—three minutes before totality.

4. Tiny glass fragments were scattered on the floor near the laser emitter in the dome room, like remnants of a shattered optical component.

5. Elena's coffee cup on the control room console had chemical residue on its base matching the specialized cleaning solution used on the laser's calibration lens.

🕵️‍Questions and Discussions for YOU

1.Who is the killer? Deduce based on the available clues.

2.How was the murder carried out? Reconstruct the complete killing process.

🎉Participation Rewards

The FIRST user to successfully deduce the identity of the "culprit" and their motive in the comment, will receive a reward of 2,000 GT points! Other participants will earn 200-500 GT points based on the completeness of their submissions. 💰(Except for extended special edition)

📅Submission Deadline

July 31, 2026

Reminder: This is the submission deadline if you want to claim the reward with your vote, but after this date the vote will still remain open for a period of time, so please feel free to participate at any time if you want to test your skills, detectives!

----- Previous answer (The Alpine Ascent) -------

Culprit: Dr. Evelyn Thorne

Motive: Dr. Evelyn Thorne murdered Viktor Draco to obtain the rare artifact he carried and to conceal her long-planned scheme involving the antique coin and the Rosetta Stone fragment before Viktor could expose her deception.

Deduction Logic – The Impossible Locked Basket:

The tiny puncture wound on Viktor's foot despite his intact shoes and socks indicates the poison was delivered before he put on his footwear. Dr. Thorne had exclusive access while examining Viktor's artifacts and carrying the microscope case. The empty antique coin compartment inside her microscope case reveals that the "lucky coin" Lucas received had originally been stored by Thorne as part of her plan. The extensive use of the spare oxygen mask suggests she secretly used it to avoid inhaling the poison or chemical involved during the preparation. The mysterious note and green fiber were carefully planted distractions intended to mislead investigators toward an external assassin.

Crime Reconstruction:

Before the balloon ascended, Dr. Thorne concealed a poisoned micro-needle inside the antique coin stored in her microscope case. While examining Viktor's artifacts before takeoff, she pricked the sole of his foot, leaving only a nearly invisible wound before he put on his socks and shoes. During the flight, the delayed poison took effect, causing Viktor to collapse inside the sealed basket. She transferred the antique coin to Lucas as an innocent "gift" from Viktor, hoping to distance herself from the murder weapon, while the forged warning note and planted green fiber diverted suspicion toward an outside conspiracy.

Conclusion:

The hidden compartment in Dr. Thorne's microscope case, the impossible puncture wound, and the staged false clues prove the murder was meticulously planned before the balloon ever left the ground. Dr. Evelyn Thorne is the killer.

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