Character: Susan
Susan Foreman watched as the TARDIS dematerialised in front of her. Her key dangled from her fingers, then fell to the ground. He promised he would come back, one day. She reached her hand back to David who took it, then stepped up to stand beside her.
'Why did he leave like that?'
'He knew I'd never leave him of my own free will. He's my Grandfather, I have to take care of him.'
David wrapped an arm around Susan's shoulders. 'Perhaps, Susan, that this is his way of taking care of you.'
She turned away, never to look back.