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The following episode contains a depiction of torture and may not be suitable for all.

Sunday, March 4th, 2018, Salisbury, Southwest England, just after 4pm.

In a patrol car, a female police sergeant and her male colleague drive through the pedestrianised city centre, siren wailing and blue lights flashing.

The emergency call came in just a minute ago, a suspected drug overdose involving two people. The sergeant talks into her radio

as they close in on the location. QJ, Echo Lima 7-1. We're at the maltings and responding. Over. Sunday

shoppers clear a path as the officers drive

towards a lawn area next to the river that runs through the city. The officers exit the car.

An ambulance is inbound, but they are the first to reach the scene. Next to a bench, they see a young

woman lying on the ground. A passerby is trying to put her in the recovery position.

On the bench is an older man.

His body strangely rigid and his eyes staring vacantly into space.

A small crowd gathers.

The male officer orders the onlookers back.

Can we have some space, please? Everyone move back. The male officer kneels to attend to the onlookers back. Can we have some space please? Everyone move back.

The male officer kneels to attend to the woman on the ground. Can you tell me your name?

The woman's breathing, but unresponsive. The female sergeant approaches the man on the bench.

He seems awake, but doesn't seem to notice that she's there. Sir, can you hear me?

The sergeant notices a puddle of vomit beneath the bench.

If this man and woman have overdosed,

the vomit might contain the highly toxic drug fentanyl,

and will need to be cleaned up.

...