A parent's worst nightmare has become reality in Port Burwell.
Two kids: a 7-year-old boy and his 10-year-old sister have drowned at a beach South of London.
They were ulled from the water Friday afternoon and airlifted to hospital, later dying.
A third person was also rescued but is expected to be okay.
The OPP say the beach was packed at the time, and are now taking over the investigation.