Complex sentence: Meanwhile Sam Twist is sent to a baby-sitting job, only to find that there isn't a baby to be sitted-instead there is Mrs Panting, a woman who needs to make her husband jealous.
Split into simpler sentences: Meanwhile Sam Twist is sent to a baby-sitting job, only to find that there isn't a baby to be sitted! Instead there is Mrs Panting, a woman who needs to make her husband jealous.