A disturbed woman helps her dead sister's husband cope with his loss, but becomes dangerously infatuated with him along the way. When he plans to remarry, she goes to terrifying lengths to prevent the wedding going ahead.

A woman meets a charming and wealthy man who becomes obsessive and controlling.

A murder witness fakes her own death and changes her identity.

An American company inadvertently unleashes a magnetic vortex on an unprepared world.