Prison Books (alternatively, Trap Books) are Linking Books to desolate Ages, and no other Linking Books to return. The D'ni used this method to punish and isolate unwanted persons. Canonically, the first instance of a prison book is in The Book of Ti'ana, which was used to trap Veovis (though he later escaped), though prison books appear several more times in the series (most notably Myst IV: Revelation and Riven). Atrus also created prison books and altered their Linking panel to show rich and flourishing worlds to lure greedy explorers (which trapped his two sons, Sirrus and Achenar). Sirrus and Achenar were 'prisoners' in Spire and Haven.