Prime Minister Stepher Harper (standing) guests on City-TV's Murdoch Mysteries with star Yannick Bisson.
Murdoch Mysteries will be moving to CBC-TV after City-TV announced earlier this year it was ending the period drama.
CBC says it has ordered a sixth season of the popular mystery series, based on a turn-of-the-century detective who pioneers radical forensic techniques to solve crimes.
Murdoch Mysteries is expected to air its fifth season on City-TV in 2012. CBC says production on more episodes is expected to begin in the spring.
CBC executive Trevor Walton says the public broadcaster is "delighted to welcome Murdoch Mysteries to the network," noting it complements current programming.
Producer Christina Jennings says the series has many stories left to tell and that she looks forward to bringing the show to a national audience.
A favourite of Prime Minister Stephen Harper, the show stars Yannick Bisson as Detective Murdoch and is set in late 1890s Toronto.