are clary and jace actually siblings in the show
List of The Mortal Instruments characters Clary learns that Valentine Morgenstern, the main antagonist of the series, is her biological father and her mother's ex-husband. At the end of City of Bones, Valentine tells them that Clary and Jace are siblings â€” which, they discover later in the series, is a lie. In the second book of the series, City of Ashes, Clary dates her best friend Simon, who has for a long time had a crush on her, in order to forget Jace during the torturous time of believing him to be her brother. She is told by the Seelie Queen that she has the ability to create runes that don't exist; but they do exist, which later enables her to destroy Valentine's ship using the "Open" rune. In the end of the second novel, Clary finds that an old friend of her mother, Madeleine, knows how to wake her mother, who has been in a magical coma since the first book.
City of Glass (Clare novel) The next day, Clary and Sebastian go to Ragnor Fell's house, where Clary is shocked to discover that Ragnor has been killed and that Magnus is there in his place. Magnus freezes Sebastian and informs Clary that she must gain a spellbook in the Wayland country home in order to save her mother. After unfreezing Sebastian, Clary and Sebastian leave and travel to the ruins of Fairchild manor, where she and Sebastian share a kiss that she breaks due to it not feeling right. She thinks about Jace throughout the whole kiss. Sebastian informs Clary that Simon is in jail.