Plot summary
Sarah evades Bonnie and escapes with a wounded Mark. They arrive at an empty house where Sarah treats Mark's wounds. When Mark loses consciousness, Sarah recovers his motel key and finds Henrik's box, where she learns he worked with Ethan, and Henrik used the DNA to produce his own clone, Abel. When Mark finds her, he reveals the baby died shortly after birth, so they go to a grave yard to recover his body. Gracie's pregnancy ends with a miscarriage, and Bonnie, believing it to be punishment from God for marrying Mark, shuns her.
Alison finds herself wanted by Ramon's boss, who is revealed to be her ex-boyfriend Jason Kellerman. The two decide to work together to distribute the drugs. Felix sets up a dating profile for Cosima to get over Delphine. Helena manages to escape from her cell and comes across a sick Castor clone, Parsons, that Coady is experimenting on. Helena kills him out of mercy before she is captured again. Sarah recovers Abel's remains, but it is intercepted by Rudy. Sarah attempts to flee, but Mark and Rudy capture her.
Credits
Adapted from Wikipedia contributors, List of Orphan Black episodes. HTML formatting and reference markers removed.