Deryni Checkmate
Katherine Kurtz
 Deryni Checkmate takes places in March 1121, four months after the coronation of fourteen-year old King Kelson Haldane. The novel opens with the rabidly anti-Deryni leader of the Holy Church, Archbishop Edmund Loris, signing a letter that demands that the Deryni Duke of Corwyn, Alaric Morgan, recant his magical powers and submit to a life of penance. If he fails to do so, Loris threatens to excommunicate Morgan and place his entire duchy under interdict. Additionally, Morgan's cousin, Monsignor Duncan McLain, is suspended and summoned to an ecclesiastical trial to answer for his part in the events surrounding Kelson's coronation. After being warned of the threat, Kelson sends Duncan to warn Morgan of the upcoming trouble, fearing that Duncan's hidden Deryni heritage may be revealed by a trial. Duncan travels to Morgan's capital city of Coroth, where he informs his cousin of Loris' threat. In addition to the ecclesiastical threat, Morgan's duchy is being ravaged by an anti-Deryni fanatic named Warin de Grey, and the neighboring kingdom of Torenth is preparing to launch an invasion of Gwynedd. Fearing that an internal Gwyneddan conflict will weaken the kingdom prior to fighting an external enemy, Morgan and Duncan eventually decide to travel to the city of Dhassa and personally appeal to the Curia of Bishops. However, en route to Dhassa, Morgan is drugged and captured by Warin, who intends to burn the Deryni duke as a heretic. Duncan manages to rescue his cousin, but is forced to reveal his Deryni powers to ensure their escape. When the Curia learns of the cousins' actions, the two are soon excommunicated. Morgan and Duncan realize that appealing to the Curia is no longer an option, so they set out to meet with Kelson. Loris attempts to place Corwyn under Interdict, but a group of bishops refuses to participate in an action that would punish an entire duchy for the actions of its duke. Loris rages against the rebels, but he and his supporters are thrown out of Dhassa, effectively splitting the Curia. Kelson has traveled to the city of Culdi to attend the wedding of Morgan's sister, Bronwyn, and Duncan's half-brother, Kevin. Unknown to anyone, a jealous architect named Rimmell has fallen in love with Bronwyn and seeks to win her affections through the use of a love charm he acquires from an old witch woman. However, Rimmell's plan backfires horribly, and the charm kills both Bronwyn and Kevin. By the time Morgan and Duncan arrive in Culdi, Rimmell has been executed for his crime. Though Morgan is crushed with grief over the death of his sister, Kelson reminds him that he must still see to his duties. Facing an internal ecclesiastical schism, rebel fanatics ravaging his lands, and an imminent invasion from Torenth, Kelson cannot allow Morgan to wallow in his grief. Morgan agrees, and returns to his duties in service to the throne of Gwynedd.