Nelson’s cousin Adam comes to visit. However, just before picking up his cousin at the airport, Nelson learns a gang has fled New York and is now residing in Delaware.

These mastermind thieves have been stealing vehicles out of bolted garages and leaving a stamped drawing of a crude black arrow in the vacant lot. Yet what are these thieves after and what does the crude black arrow mean?

As Nelson attempts to solve the baffling mystery with the help of his cousin Adam and two friends, Todd Marns and Jeff Corsin, he stumbles on a new side of the case. The sleuth plummets into the search for a historical, forgotten inheritance.

Will Nelson Carson be able to stop the Black Arrow gang’s illegal work in this mind-boggling case, or will the thieves remain unconquerable as they escape with their priceless cargo?