Rachel Skarsten

Mary risks everything to take down Conde, even as Francis believes she is turning against France. Catherine makes a bold move and meets with Queen Elizabeth (guest star Rachel Skarsten) in a stunning plot to seek revenge on Mary. Meanwhile, Kenna has a secret that will seal the fate of her relationship with Bash. Celina Sinden, Anna Popplewell, Craig Parker, Jonathan Keltz and Rose Williams also star.

As Team One races to track down Ed's shooter, they connect him to a drug kingpin who is using the shooter to import opium from Afghanistan. Meanwhile, Ed is rushed to the hospital for surgery at the same time as his wife is having problems delivering their baby.

When Team One goes up against a notorious serial robber who streams his robberies on the Internet, they discover there is more to this man's mission than first appears.

When Raf, a new recruit, joins Team One, he learns what it means to be a member of the Strategic Response Unit on one of their toughest days of the year for hostage and suicide situations - Valentine's Day.

When Sam's sister Natalie is threatened by her drug-running ex-boyfriend she turns to Spike for help.