Lester C. Fletcher

The Harts' dog Freeway uncovers the gun used to murder a wealthy neighbour and unwittingly exposes an elaborate scheme to steal millions of dollars in gems.

Barnaby is conned into helping another private investigator find a missing girl. But he's not honest with Barnaby about all that is involved with her disappearance or that he's tried to extort money from the people that are looking for her.

A thief who stole a super secret laser crystal hides out at a science fiction convention.