A foggy night ... a lonely country house ... and a woman with a gun in her hand quietly surveying the dead body of her husband. It looked like a straightforward case of murder. Or was it? As the ghosts of an old wrong begin to emerge from the past, the case begins to look anything but straightforward ... First staged at the Duchess Theatre in London in 1958, this play ran for 604 performances and is as gripping and ingenious as you would expect from the Queen of Crime.