Casting Considerations

Jigsaw 
Portrayed by Louise Clark 
Jigsaw is a fictional identity, created by Becky's boyfriend and his friend to conduct a murder spree in the town of Willerby. The costume used is a generic Halloween costume officially called Father Death, that allows anyone to adopt the identity and makes the killers difficult to identity. Jigsaw taunts his victims on the phone attacking using a voice changer to disguise the true identity. 

Becky Prescott
Portrayed by Chloe Busby 
Becky Prescott is a wyke college student, a year after the murder of her father Steve, she is stalked by the killer (Jigsaw) which is later revealed to be her boyfriend Jason Ford and his friend. These two prove to be Steve's murderers, Jason being motivated by Steve's affair with his Mother. 

Joe Ford
Portrayed by 
Joe Ford is also a Wyke student, the friend of Becky Prescott and an avid fan of horror films. Following a series of murders, Jason becomes a suspect when she is found at Becky's house with a mobile phone shortly after she is taunted on the phone and attacked by Jigsaw.