Mrs Hart has been entered into a rose growing competition by Max, and her flower is chosen for the finals. At the same time, one of the main competitors a Greek organized crime figure is killed. They begin to investigate.
The Harts are on holiday in Acapulco, when they hear a senator has been assassinated. The assumption is the assassination is linked to bribery and corruption charges in the silver industry. The Harts decide to investigate.
Hart recording artist Lorene Tyler (real life country singer Charly McClain) is beginning an international tour. Lorene's manger/husband Jesse, a jewel thief, has a costume made for her that sparkles with the stolen diamonds from a recent jewelry store robbery. After the outfit is loaned to Jennifer for a party, Jesse is determined to get it back at any price, even murder.
When Jonathan and Jennifer visit her father,he seems preoccupied about something. He doesn't tell them anything. Later when something happens, he reveals that after the war he and some other men were tasked with locating a Nazi and bringing him to trial. He now learns that the man's son is seeking vengeance and has taken out the men who helped him and now he's coming after him.