ARE 你 SURE 你 WANT TO KNOW??!?!?!?!?!? READ NO FURTHER FOR SPOILER IF NOT!--------------------------------------------------------------------------- ------------------------------------------------------ dean comes back obviously and ruby does too, however not the same actress! unfortuanately i hate the new ruby!
Ruby does come back in Lazarus Rising, but is played 由 a different actress, Genevieve Cortese. We don't find out until episode 9, "I Know What 你 Did Last Summer", that Lilith released Ruby from Hell, but on the condition that she kill Sam. But she disobeys the order and ends up killing the demon sent with her, and she and Sam escape.