Réponse:
The killer entered the house when everyone was sleeping.
He was looking for his knife when his mobile phone rang.
Everybody woke up when they heard it.
They were screaming and called the police.
The killer was climbing out the window when he got stuck.
He was shouting he was innocent.
He was still yelling when the police found him.
Later that night, he found it was his mother on the phone.
She wanted to know what time he would coming home!