What is a 'hook' in a TV drama?

What is a 'hook' in a TV drama?

Pamela Douglas (Screenwriter) gives expert video advice on: How do I know if my idea will make a great TV drama?; How many pages is a TV drama script?; What do I do if my script is running long? and more...

A hook is the beginning material in a script, which engages an audience because of a quest, problem, issue, or surprise which draws you into wondering what will be the consequences of that action on screen.