Lost Child - S1.E18

During a search for a kidnapped newborn, Joel and Fearless uncover an obstetrician's plot to steal the babies of recovering addicts; on the eve of entering rehab, David gives Joel the heads-up that IAB is reopening the investigation into Emma's death; Tom takes the upper hand and neutralizes Trumper's attempt to coerce him into snitching on Joel; Kelly and Joel discover that although they each feel guilty for the death of their daughter, there was nothing they could have done to save Emma from the cerebral aneurysm that ended her life.