Leighton Gage (1942–2013) wrote six other books in the Chief Inspector Mario Silva series: Blood of the Wicked, Dying Gasp, Every Bitter Thing, A Vine in the Blood, Perfect Hatred, and The Ways of Evil Men. Since 1973, he spent part of each year in Santana do Parnaiba, Brazil, where he met his wife, Eide. His books have been translated into French, Italian, Finnish, and Dutch.