<P> Meanwhile, the others are introduced to Aline Penhallow and her cousin Sebastian Verlac . Some members of the Clave want Simon to lie and say that he, along with the Lightwood family, are Valentine's spies, but Simon refuses, which leads to his imprisonment . </P> <P> Clary sneaks away from Amatis' house to find the others, only to find Jace and Aline kissing each other . Jace yells at Clary to drive her away . Clary leaves, heartbroken, and Sebastian offers to take her home, where she finds an angry Amatis waiting for her . </P> <P> 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 . </P> <P> Clary returns to Amatis' house where Jace is waiting for her . He apologizes to her for his harsh words, only for the two to fight once again about him not telling her about Simon being in jail . After they calm down, they travel through a portal Clary made to the Wayland manor and get the spellbook only to discover the remains of an experiment Valentine had been running on a half - dead angel . They then learn through the angel that Jace has demon blood . Jace, after the angel shows them these visions, pulls out a dagger and hands it to the angel . The angel kills himself . </P>

When do sebastian and clary kiss in city of glass
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