An investigation from CBC's The Fifth Estate unravels the complicated tale of how a high-stakes gambler set authorities on the trail of accused Canadian spy Cameron Ortis. Bob McKeown, co-host of The Fifth Estate, tells us more.

As winter weather sets in, some schools without mechanical ventilation are trying to lower the risk of COVID-19 transmission by keeping windows open and telling students to wrap up warm. We talk to Joe Ortona, chair of the English Montreal School Board, which has bought 800 air purifiers for its classrooms; Krista Wylie, co-founder of Fix Our Schools, who says issues with school buildings predate the pandemic; and Jeffrey Siegel, professor of civil engineering at the University of Toronto.

A U.K. inquiry is probing a long history of undercover police officers infiltrating activist organizations, and deceiving women into relationships — sometimes even fathering children — before disappearing back to their own lives. We talk to environmental activist Helen Steel, who had a long relationship with an undercover officer; Guardian reporter Rob Evans, co-author of Undercover: The True Story of Britain's Secret Police; and Steve Hewitt, senior lecturer in American and Canadian Studies in the history department at the University of Birmingham.

B.C. was held up as a success story for the way the province contained COVID-19 in the spring and summer, but now hospitalizations and deaths are at an all-time high. Deputy Provincial Health Officer Dr. Réka Gustafson guides us through the problem areas and hot spots. And we talk to Karen Biggs, CEO of long-term care home Menno Place in Abbotsford, B.C.; Cody Younker, a city councillor in Revelstoke, B.C., where cases have spiked alarmingly; and Tara Kurtz, a mother in Langley, B.C., who is calling for greater protection measures in schools.

The federal Liberal government has introduced legislation that will begin the process of bringing Canadian law into alignment with the United Nations Declaration on the Rights of Indigenous People. Anishinaabe educator and writer Hayden King, and Indigenous Corporate Training Inc. president Bob Joseph share their reaction to the pledge. Plus, we ask Crown-Indigenous Relations Minister Carolyn Bennett what it will take to implement it.

NFL teams are racking up COVID-19 cases as well as points on the field, and many believe that doesn't bode well for the rest of the season, and the return of the NHL and NBA. We talk to Kurt Streeter, who writes the Sports of the Times column for the New York Times.

Does Canada need more surveillance testing — pop-up testing sites aimed at finding asymptomatic COVID-19 cases? Some experts argue the approach could paint a better picture of how the virus is spreading. We talk to Dr. Lisa Barrett, an infectious diseases specialist at Dalhousie University; Colin Furness, an epidemiologist at the University of Toronto; and Dr. Lynora Saxinger, an infectious diseases specialist at the University of Alberta.

The U.K. has approved Pfizer's COVID-19 for emergency use, but how long will it be before Health Canada approves a vaccine, and who gets it first? Matt Galloway is joined by Dr. Caroline Quach, chair of the national advisory committee on immunization; Dr. Supriya Sharma, chief medical advisor to Health Canada's deputy minister; and Dr. Scott Halperin, director of the Canadian Centre for Vaccinology.

Renowned Zen teacher Roshi Joan Halifax has spent years helping health-care workers cope with stress and burnout. She'll share some of the lessons that could be helpful for us all, nearly nine months into the pandemic.

When should the response to COVID-19 be led by politicians elected to set public policy, and when should it be led by the doctors who understand the science behind the virus? To discuss how the pandemic has pitted science against politics in the eyes of the public, we hear from Stephen Meek, director of the Institute for Policy and Engagement at the University of Nottingham; Dr. Jim Talbot, former chief medical officer of health for Alberta; and Heidi Tworek, associate professor of international history and public policy at the University of British Columbia.