Their instincts and intelligence were valuable assets for teenage brothers, Joe and Frank Hardy, as they followed in the footsteps of their well-known father, Fenton Hardy, a former police detective. They had wits and courage that gave them what it took to solve cases in their fictional home of Bayport in the upper east coast area of the US. They never lost their nerve despite being frequently confronted by danger. In this instance there is a robbery at the Tower Mansion and a friend of the Hardy Boys' father is falsely accused. Young Joe and Frank take on the case. The actual crook is found but he utters mysterious words while dying and these have to be deciphered to find the stolen loot. The boys wind up with a nice reward. Listen now to learn of their persistent determination.