After striking a deal with a new opium supplier, Ah Sahm and Young Jun (Andrew Koji, Jason Tobin) search for a secure hiding place for their product in the new episode "The Chinese Connection." Elsewhere, Lee (Tom Weston-Jones) becomes more dependent on laudanum as he and Bill (Kieran Bew) continue investigating the swordsman murders. Mai Ling (Dianne Doan) dispatches Li Yong and Zing (Joe Taslim, Dustin Nguyen) to deliver a message to a rival tong. Joanna Vanderham also stars.