Prejudiced thugs attack a Puerto Rican teen at the neighborhood youth center, egged into action by the columns of a bigoted writer. As his son lies near death in the hospital, the boy's father pays the race-baiting writer a visit--armed with a hand grenade.
Poccari must persuade a self-exiled Arab princess to leave Rome and take over her country from her murdered brother, before the villain Cathis does. Poccari accompanies her on the plane flight, in which Cathis has a surprise for them.
Manfred is called to the estate of Lord Eastly for a deathbed confession: the Rembrandt painting hanging in his home is an original. It had been stolen from the museum and replaced with a copy. The lord wants Manfred to return the painting as quietly as possible.