unsolved mystery
Case still pending
An unsolved mystery is a puzzle, crime, or unexplained event that remains without a definitive answer despite investigation.
The phrase often appears in true crime contexts—The disappearance remains an unsolved mystery—but extends to any persistent enigma: The origin of the universe is still an unsolved mystery to scientists.
- enigmaSomething hard to fathom
- clueSolving aid
- red herringIntentional misleading distraction
- dead endPassage without outlet
- detectiveProfessional crime investigator
amateur sleuth · cold case · true crime · riddle · cryptic · disappearance · whodunit · investigation · suspect · evidence · puzzle · conspiracy · vanished · haunting · unanswered · baffling · sleuth · crime scene
- mystery fictionwhodunit, whodunnit, sleuth, detective novel, detective fiction
- true crimetrue crime, cold case, crime docs, homicide, serial killer
- puzzlespuzzles, sudoku, jigsaw puzzle, puzzle cube, crossword
unsolved mysterycommon knowledge
Widely shared information
public record · self-evident truth · verified account · certainty · open book
unsolved, mystery, solve, solved, solving, solver, solves, solvable, unsolvable