Overview
Sign of the Unicorn is a fantasy novel by American writer Roger Zelazny, the third book in the Chronicles of Amber series. It was first published in serial format in Galaxy Science Fiction.
Plot introduction
Eric is dead, and Corwin now rules Amber as Regent — but someone has murdered Caine and framed Corwin. Random tells his part of the story. Corwin decides to find out what happened to Brand who is either missing or dead, and begins to find his obsession with the throne is a two-edged sword that may cost him his life, as it has his brothers'.
Plot summary
Corwin returns to Castle Amber bearing the body of one of the spined, bloodshot-eyed humanoid creatures that had pursued Random to Flora's house on Earth—one that had moments earlier killed his brother, Caine. Fearing that he has been framed for Caine's murder, Corwin summons Random, who tells him the story how he came to be chased across shadow to end up in New York City:
Random had been enjoying life out in a shadow, Texorami, that he had selected/created to be an ideal place to gamble, hang-glide and especially play the drums. One day he received an unusual Trump call in the form of the Jack of Diamonds, that spoke to him as his brother, Brand, asking for help to escape from an unfamiliar shadow.
From Wikipedia (CC BY-SA 4.0).