Today, BBC America released the fourth trailer for the explosive new season of the dramatic conspiracy thriller, Orphan Black. Season 2 hits the ground running with Sarah (Tatiana Maslany, Parks and Recreation, Picture Day) in a desperate race to find her missing daughter Kira (Skyler Wexler, Carrie) - a wild pursuit that brings her head-to-head with ruthless pro-clone, Rachel (Maslany). This season also rejoins Sarah, Alison (Maslany) and Cosima (Maslany) as they struggle to keep the 'clone world' a secret and pick up the pieces of their broken lives - all while dealing with the harsh reality that literally no one around them can be trusted. Season 2 of Orphan Black premieres Saturday, April 19 at 9:00pm ET/PT on BBC America with "Nature Under Constraint and Vexed".