Fog Alley by Holly Hertzel, Mike Prittie

When best friends Fox Flaherty and Daisy Harlow arrive at False Creek Studios to begin filming 'Fog Alley', they have no idea that they will soon be embroiled in a tense murder investigation.
When filming begins, nobody expects that a high profile murder will happen the first day on set. When Fox and Daisy are pulled into the investigation, they begin to unravel the many secrets held by cast, crew and others surrounding the production. But the danger to their own safety becomes a reality when they become targets of a sinister killer.