W5 investigates disturbing allegations against a pediatric dentist in Nova Scotia whose treatment of children over five decades is now an alleged crime.

The Millionaire Murders: Who killed Daniel Langlois and Dominique Marchand?
23:26

Narco Jungle: The Darien Gap – One of the world's most dangerous migrant routes
44:47

The Cult Queen: A charismatic leader holds a Saskatchewan town hostage
45:07