Jen

Jennifer 'Jen' Yates is Katie Barcley's best friend, Tom's girlfriend and Adam's sister. She is the daughter of Debbie Yates and the cousin of Lori and Annie.

The Stalker 1
In the Stalker 1, Jen is Katie's best friend and they go everywhere together. She goes with Katie to see how Kris's best friend, Alex and then they go to meet Adam and Tom. Later on Tom invites them to his birthday party and Jen falls unconscious due to her drink being spiked. Jen eventually wakes up and goes downstairs, finding all the guests are dead. She is then chased by the killers and killed with a meat cleaver - her corpse is placed in a bathtub and is later discovered by Katie.

The Stalker 3
Jen is seen in a photograph with her brother Adam. When comforting Holly over the death of her friend Claire, Katie says she understands how she feels, because she lost her best friend Jen in similar circumstances. In the finale, Officer Harris asks Katie who murdered Jen - Katie, unsure, says Tom. However, it is confirmed that Richard was actually the one who killed her.

Trivia

 * Despite only appearing in one film, Jen is a firm fan favorite, with many viewers lamenting her demise and even speculating she might still be alive (though the latter seems very unlikely).