S1, E4: Nimue returns to Avalon, where she is found by Merlin. Derfel and Owain travel to collect taxes from King Cadwys, but he convinces Owain to raid a nearby mine to settle the debt instead. The raid turns violent. Merlin discovers that Nimue is pregnant but refuses to help her perform an abortion – she runs away from Avalon. Finally, Gundleus returns with Gorfydd to Caer Cadarn.