10 Deadliest Accidents In Star Trek

8. Firewall Troubleshoot

In 2256, deadly met disgusting in an accident on the USS Glenn. Context was for those who went to wander the dark corridors of this Crossfield-class. "Helical trauma," i.e., twisted to death, is one of the worst ways to go. By the vagaries of the crew complement of sister ship the USS Discovery, 135 or so all went the same way.

Parallel to the Discovery, the Glenn was also running spore drive experiments under the supervision of astromycologist Straal, research partner to Paul Stamets. Straal's "breakthrough" was the capture, and use as a navigator, of a giant tardigrade (or, rather, a tardigrade-like creature). One 90-light-year jump to the Beta Quadrant with the soon-to-be-named 'Ripper' went well enough. The trip back, not so much.

Upon exiting the mycelial plane, the Glenn hit an "undetectable Hawking radiation firewall," causing all biological life (except the tardigrade) to 'spin out'. When the away team led by Commanders Stamets and Landry arrived aboard, the crew were indeed just a gruesomely contorted pile of their former selves.

This was an accident, yes (Hawking radiation might also suggest the ship struck a black hole), but in the heat of war with the Klingons, and with Mirror Lorca breathing down the Prime universe's neck, it was an accident waiting to happen.