The Ruby Knight is the second book in the Elenium series by David Eddings, continuing the epic tale of the knight Sparhawk as he embarks on a quest to save the queen and confront dark forces.

In this installment, Sparhawk and his companions face new challenges and adversaries as they seek to retrieve the sacred gem, the Ruby, which holds the key to the queen's salvation. The journey is fraught with danger, betrayal, and the discovery of ancient secrets.