Timothy Piatkowki was scrolling when a targeted ad landed in his feed. Cheap peptides! Straight from the factory! Naturally, he started a chat with the dealer and found himself deep in the world of a thriving grey market.

The more he found out, the less he realised we know about what’s really in these tiny drug vials being shipped around the world.

You can see screen grabs of Tim’s exchanges with the peptide seller in a fascinating visual story he’s written for us about the experience. Read it here.

This episode was written and produced by Isabella Podwinski. Sound mixing is by Michelle Macklem and our theme music is by Neeta Sarl. Ashlynne McGhee is our Head of Editorial Innovation and Misha Ketchell and Stephen Khan are our editors in chief. You can sign up here for a free daily newsletter from The Conversation.

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