在這一集中，Dink連續收到五封寄錯的信，更奇怪的是信中的Dorise Duncan竟然大老遠的從科羅拉多跑來拿回這些信，更讓他們覺得事情不尋常。Dink, Josh 和Ruth Rose 這三個好朋友這一回又會碰到什麼樣的事呢？這一系列書都在描寫以Dink, Josh 和Ruth Rose 這三個好朋友為主角的偵探故事。相當有趣，適合8歲以上兒童閱讀。
Dink keeps getting letters addressed to “ D.Duncan.” But when he opens them, they all start “ Dear Doris” and don’t make any sense! Josh and Ruth Rose think someone’s playing a trick on Dink. But Dink is sure there’s more to it than that--- especially after Doris Duncan shows up and demands her letter!
