Fiona grabs a bottle from her backpack and switches on her phone's flashlight. She tells us to take a bit of each in our hands and rub it over our faces and necks. This will mask our scent as we proceed. She takes some of the liquid herself and pours it into each of our palms. Zeila takes the lead, and so do I. Then Fiona gestures toward the two corridors ahead with her phone.

"The late Alpha constructed this escape path. One leads to the forest, while the other to a drain in the ...