So something like this ...
EXT. FIELD - DAY
A huge open air tent is sitting in the middle of the field.
__________________________________________________________________CUT TO:
INT. TENT
Johnny and Suzy are sitting in the middle of the tent. They are looking around at the people coming and going from the tent. Suddenly the tent bursts into flames, and Johnny and Suzy die.
Poke
PS You have to make sure that Johnny and Suzy die. If they live, you've committed one of screenwriting's oldest mistakes - NOT LISTENING TO POKE.