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1. Bölüm Three American army deserters claim refugee status in Canada, and ICS must deal with the personal and political fallout.
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2. Bölüm A deadly assassin shows up in Toronto, drawing ICS into a web of international political intrigue.
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3. Bölüm MI6 horns in on the ICS investigation of tainted heroin and an African drug smuggling ring.
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4. Bölüm The Prime Minister of Quebec feels threatened and ICS follows the trail of a former FLQ bomber to a small town straddling the Canadian/US border.
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5. Bölüm An eco-terrorist sabotages an Alberta pumping station and Gray and Layla must untangle an international corporate espionage scheme.
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6. Bölüm Counterfeit pharmaceuticals kill an American rock star. ICS searches for the Canadian link but Bianca LaGarda takes matters into her own hands.
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7. Bölüm While tracking a fundamentalist Christian sect moving "child brides" across the border, Gray meets his match.
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8. Bölüm Maggie becomes personally invested in the plight of two young Filipino children, victims of a human trafficking scheme.
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9. Bölüm Kessler suspects the Canadian military is complicit in the cover-up of a scheme to smuggling cheap Afghan heroin into the country.
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10. Bölüm The frozen body of a Russian man is found in a railway car triggers an ICS investigating of the smuggling of blood diamonds via the Canadian north.
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11. Bölüm ICS face escalating gang violence when a U.K. Tamil gang member enters the country for his son's life-saving surgery.
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12. Bölüm As international leaders debate Arctic sovereignty, Kessler and ICS fight to rescue a Canadian submarine crew trapped under the polar ice.
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13. Bölüm ICS discovers that toxic sludge is being trucked across the border and dumped in the Canadian wilderness. They follow a trail to a vicious criminal gang, who gain control over Gray and his father. As Gray struggles to save his father, he sets off a chain of events which bring about the season's shocking conclusion.