Pen Pals

Olivia & Natasha are school chums who sometimes write silly notes to each other, just for fun. These notes are often full of suggestions for pranks of one kind or another! Imagine their surprise when some of these notes start to contain suggestions that are clearly not their own!
What concerns these best friends even more is that some of the notes express a deadly message for Olivia - a warning that someone they think of as a friend is NOT to be trusted. But who? Now the race is on to find the answer - but can they find it in time?