A small, leprichan of a man, and valet to the Exxon family enters to take Sam on his next case. Mr Figg delivers Sam to the distraught Hillary Exxon. Gunshots have the household in disarray. The old man has plenty of enemies, and he tells Sam as much as he can on the confusing ordeal.
Sam has his hands full as he meets the houseful of suspects. Might it be the nurse, the neighbor, or any number of the relatives? Before Sam has time to wonder, another murder attempt is made. The killer has fled, and Sam trails him to the house next door. Schemes of blackmail emerge. Back at the Exxon mansion, more intruders terrorize the family.
Even with Sam on guard, things have a way of going bump in the night. Is there secrets the old man will carry to his grave? Maybe so, but there’s still a mystery for Sam to solve. Will Effie get her robotic reminder to work for her?