In "Do I Know You?", we learn that Lucy, a clone, was created from a younger version of someone very important to Kira.
This discovery throws Kira into a deep sadness, making her realize the importance of love and family.
The episode also introduces Paul Darros, a wealthy tech mogul who is trying to use cloning for humanitarian purposes, but his true intentions are unclear.
With more questions than answers, Orphan Black: Echoes continues to keep us on the edge of our seats, wondering what will happen next.