Dangerous Corner was the first play by the English writer J. B. Priestley

Robert and Freda Caplan are entertaining guests at their country retreat. A chance remark by one of the guests ignites a series of devastating revelations, revealing a hitherto undiscovered tangle of clandestine relationships and dark secrets, the disclosures of which have tragic consequences. The play ends with time slipping back to the beginning of the evening and the chance remark not being made, the secrets remaining hidden and the “dangerous corner” avoided