Fancy a fever tree and vodka.

Yes, vodka, not gin.

Because this is fever tree Mexican lime soda.

Yes, soda, not tonic.

With Mexican lime and Japanese yuzu for a zesty, refreshing lime soda that's just sweet enough.

Delicious with vodka or on its own. Fever tree, Mexican lime soda that's just sweet enough. Delicious with vodka or on its own.

Fever tree Mexican lime soda mix with the best.

Hmm, now that hits the spot.

Hello, it's Rachel here.

I'm the reporter on The Lab Detective.

Thank you for listening.

If you're enjoying this podcast, you can listen to all episodes today by subscribing to

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And you can listen to our previous investigations right here on Tortus Investigates from The Observer.

The Observer.

Last time, on the lab detective.

The prosecution was offering a compelling and a unitary explanation.

These children have been murdered.

And the best that defence could do was say, well, we're not so sure they have been.

So we just turn to each other saying, what about count two?

It was just count two.

Because it was one of a perhaps three dozen genes that had already been proven to be linked

...