Needs to Know (S02E12)

A mysterious SOS call from Whitelighter Helen (Azura Skye) draws Harry (Rupert Evans), Mel (Melonie Diaz), Macy (Madeleine Mantock) and Maggie (Sarah Jeffrey) into a perilous conflict with Darklighter Helen. In an attempt to reignite the Power of Three, Macy resorts to drastic measures. (Prime Video)