Part 1

E1

When a rabid cat is smuggled in to Britain, the spread of the disease goes unnoticed. That is until the first human falls victim to the terrible Mad Death.

Part 2

E2

Hillard moves to contain the outbreak inside the quarantine zone, while Anne searches for the source of the virus. Then another case is reported - outside the quarantine.

Part 3

E3

Efforts to contain the disease are threatened by sabotage. Both Hilliard and Anne find themselves in terrifying danger.