Gray gets threatened by American-based mobsters to assist them in smuggling their "goods" to Canada while he suffers from relationship problems from his superiors and from Liz. Layla and Dougie are taken hostage by the mobsters while a Turcott Solutions-led tactical team led by Mannering investigates the case with their manpower covertly.

As international leaders debate Arctic sovereignty, Kessler and ICS fight to rescue a Canadian submarine crew trapped under the polar ice.

ICS faces escalating gang violence when a U.K. Tamil gang member enters the country for his son's life-saving surgery.

The frozen body of a Russian man found in a railway car triggers an ICS investigating of the smuggling of blood diamonds via the Canadian north.

Kessler suspects the Canadian military is complicit in the cover-up of a scheme to smuggling cheap Afghan heroin into the country.

Maggie becomes personally invested in the plight of two young Filipino children, victims of a human trafficking scheme.

While tracking a fundamentalist Christian sect moving "child brides" across the border, Gray meets his match.

Counterfeit pharmaceuticals kill an American rock star. ICS searches for the Canadian link but Bianca LaGarda takes matters into her own hands.

An eco-terrorist sabotages an Alberta pumping station and Gray and Layla must untangle an international corporate espionage scheme.

The Premier of Quebec feels threatened and ICS follows the trail of a former FLQ bomber to a small town straddling the Canadian/US border.

MI6 horns in on the ICS investigation of tainted heroin and an African drug smuggling ring.

A deadly assassin shows up in Toronto, drawing ICS into a web of international political intrigue.

Three American army deserters claim refugee status in Canada, and ICS must deal with the personal and political fallout.