George Bird is a salesman of agricultural machinery who finds out that he hasn't long to live. On his doctor's advice, he goes to an exclusive seaside resort to spend his savings on one last holiday.

An upper-crust family dinner is interrupted by a police inspector who brings news that a girl known to everyone present has died in suspicious circumstances. It seems that any or all of them could have had a hand in her death. But who is the mysterious Inspector and what can he want of them?