An avalanche seals the only road to a mountaintop observatory, trapping five people at 2,700 metres. By morning its director lies dead beneath the great telescope. No one else could have reached the summit.
Wednesday, February 7th — Vesper Ridge Observatory, a concrete drum bolted to a granite shoulder 2,700 metres above the valley floor, reached in summer by fourteen kilometres of switchback road and in winter, quite often, by nothing at all.
The avalanche came down at kilometre 14 on Tuesday evening, carrying eleven metres of snow across the road. The valley rescue service estimated four days to clear it. Five people were inside when the mountain closed around them.
Dr. Anton Kessler had run Vesper Ridge for nineteen years. He was a careful, unhurried man who distrusted anything that arrived at a conclusion too quickly, and who had spent the last two months growing quieter at meals. In eleven days he was due in Munich to present the observatory's headline result of the decade: the detection of an atmosphere around a small rocky planet forty light-years away, the work of his postdoctoral researcher Dr. Petra Lindqvist. The grant that funded it — 1.2 million euros of public money — had been renewed on the strength of that result.
On Monday, Kessler had asked the archive server for something unusual: a batch of old files he had not looked at in months. He printed them. He said nothing to anyone about why.
Wednesday evening was ordinary in the way that only isolation makes ordinary. Tomas Reiss, caretaker and cook for twenty years, served venison stew at seven. Magnus Holt, the facility engineer, spent the meal complaining about the trustees, who had written to him in January to say that his post would be cut in the spring. Elin Kessler, the victim's daughter, had come up on Monday to talk to her father about selling the family's land in the valley and had not yet managed a conversation that lasted more than four minutes. Petra Lindqvist ate quickly and went back to the control room.
The planned observing run was cancelled at 21:30 — the wind was far beyond the dome's operating limit and the shutter stayed shut all night. Kessler badged into the dome at 23:40 anyway, as he often did, to sit with the instrument. He did not come out.
At 6:52 AM Tomas Reiss opened the dome door for the morning inspection, felt the air go wrong in his throat, and pulled the victim's body into the corridor. The helicopter came five hours later.
4 people had the means, the motive, or the opportunity. Only one of them is the killer.
Work through the full case file the way a real detective would: read the police report, walk the crime scene, question every suspect, and study every piece of evidence in the file. Cross-reference statements against the physical evidence, spot the contradictions, and build your theory before you make your one and only accusation.
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