A teenage murder witness is drowned in a tub of apples...
But first he must establish whether he is looking for a murderer or a double-murderer....
That night, Hercule Poirot is called in to find the `evil presence'.
But within hours her body is found, still in the house, drowned in an apple-bobbing tub.
When no-one believes her, she storms off home.
At a Hallowe'en party, Joyce - a hostile thirteen-year-old - boasts that she once witnessed a murder.
A teenage murder witness is drowned in a tub of apples..