[Shot of squash court, two girls, best friends, playing against each other. After the game, shot of changing room, they are just about to leave.]
Anna (1st girl): I’ll see you tomorrow. Give you another thrashing.
Leah (2nd girl): Yeah, we’ll see about that! (laughs) Need a lift?
Anna: No, I’ll walk home.
Leah: OK. Bye
[Both girls leave at the same time. Leah gets in her car and drives off. Anna is walking in the same direction. Shot of her heart, beating normally. Shot of her walking. Another shot of her heart, now beating erratically. Shot of her vomiting, then collapsing.]