Vain, arrogant, fading movie star Anne Marion calls a press conference to announce plans for an autobiography. Then, a bomb goes off. The actress hires Intertect and, after a look at available operatives, decides Mannix is her man. The assumption was the bomb was a publicity stunt. Mannix visits one of Anne's ex-husbands, who performs special effects work. The bomb was supposed to be a dud. Mannix is convinced that someone wants to do the actress harm. She has three suspicious ex-husbands, one of whom is an arrogant hothead, the other who employs shady and violent bodyguards. Mannix decides to make himself a target by having Anne's college-age daughter take the diary of the actress and letting the ex-husbands know it. Is one of them the potential killer? Or is it somebody else?
—Bill Koenig