Sean Farrell ( Reeve ) is a lawyer working in San Francisco , who in the past beat his long-lost wife , Jean , who disappeared in the 1985 Mexico City earthquake . One day , he notices Megan Lambert ( Smith ) , a Wisconsin teacher visiting the city with her husband Peter ( Mason ) and son Jamie ( Bell ) . He grows convinced that Megan is his wife , and ignores any denials she is making . After kidnapping her for a short period of time , he contacts his first wife 's father , who tells Sean that Megan is not his daughter . Sean , by now , is too obsessed with Megan though , resulting in the woman and her family living in constant fear
1985 Mexico City earthquake
1985 Mexico City earthquake
Nightmare in the Daylight