Fynch checks the surroundings, his squirrelly affect shifting into a quieter, tenser mode. He whispers that he has proof of the Lucent Brood's shady schemes.
He transmats a strange, gleaming fragment in the air before you. As it drops into your open hands, it sends a slight but distinctly paracausal pulse through your palms.
Fynch explains that he swiped it from the apothecary wing in Savathûn's fortress. He isn't exactly sure what it is, but he's convinced that it's meant to play an important part in some twisted ritual.
Bring the fragment to the Hidden in the Enclave for analysis.