An Inspector Calls

The name of this movie is An Inspector Calls released in 1954-03-16 and it's main theme is Based on a famous stage play and set in the year 1912, 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?.