'An Unforgivable Dream' has three story lines that converge into an unexpected conclusion. The first story concerns a young detective's recurring dream that weaves it way through the manuscript, each time becoming slightly more detailed. The second story involves a murder case that presents a unique problem when the Prosecutor discovers during the trial that the accused has an identical twin. And, the third story revolves around three almost simultaneous robberies that occur miles apart and from safes that were opened using the combination.