Watson

In the first instalment of the two‑part series, a group of colleagues suddenly become victims of a dark scheme that leaves them seriously ill. As the illness spreads, the team realises they have been deliberately targeted, and the urgency escalates. With time running out, everyone is forced to rally together, pooling their skills and resources in a desperate attempt to rescue the afflicted members before the situation becomes irreversible. Every department is called in, from the senior officers to the support staff, all working in unison to halt the spread. The episode builds tension as the collective effort intensifies, highlighting the race against a looming deadline to prevent further tragedy.

The team finds themselves thrust into a seemingly impossible dilemma, with two people's lives teetering on the edge while they've got just one vial of antidote to work with. They've got to grapple with the agonising decision of who'll receive the sole dose, fully aware that the other will be left without a chance of survival. In the midst of this pressure, John's finally confronting Moriarty, the long‑standing adversary who's haunted him throughout the series. Their encounter marks the culmination of a tense cat‑and‑mouse game, bringing the two foes face to face under the shadow of the urgent medical crisis.

The team finds themselves thrust into a seemingly impossible dilemma, with two people's lives teetering on the edge while they've got just one vial of antidote to work with. They've got to grapple with the agonising decision of who'll receive the sole dose, fully aware that the other will be left without a chance of survival. In the midst of this pressure, John's finally confronting Moriarty, the long‑standing adversary who's haunted him throughout the series. Their encounter marks the culmination of a tense cat‑and‑mouse game, bringing the two foes face to face under the shadow of the urgent medical crisis.